./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.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/mix009.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/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix009.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 19:53:26,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:53:26,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:53:26,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:53:26,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:53:26,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:53:26,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:53:26,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:53:26,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:53:26,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:53:26,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:53:26,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:53:26,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:53:26,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:53:26,998 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:53:26,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:53:26,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:53:26,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:53:26,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:53:27,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:53:27,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:53:27,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:53:27,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:53:27,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:53:27,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:53:27,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:53:27,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:53:27,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:53:27,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:53:27,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:53:27,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:53:27,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:53:27,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:53:27,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:53:27,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:53:27,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:53:27,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:53:27,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:53:27,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:53:27,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:53:27,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:53:27,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:53:27,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:53:27,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:53:27,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:53:27,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:53:27,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:53:27,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:53:27,289 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:53:27,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 19:53:28,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:53:28,616 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:53:28,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 19:53:28,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd466f933/8a1090198455405087465c33a1ca1e3b/FLAG84fbf4859 [2024-06-27 19:53:28,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd466f933/8a1090198455405087465c33a1ca1e3b [2024-06-27 19:53:28,656 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:53:28,657 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:53:28,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix009.oepc.yml/witness.yml [2024-06-27 19:53:28,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:53:28,840 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:53:28,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:53:28,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:53:28,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:53:28,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:53:28" (1/2) ... [2024-06-27 19:53:28,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d52992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:53:28, skipping insertion in model container [2024-06-27 19:53:28,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:53:28" (1/2) ... [2024-06-27 19:53:28,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52ba5103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:53:28, skipping insertion in model container [2024-06-27 19:53:28,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:28" (2/2) ... [2024-06-27 19:53:28,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d52992 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:28, skipping insertion in model container [2024-06-27 19:53:28,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:28" (2/2) ... [2024-06-27 19:53:28,850 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:53:28,923 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:53:28,924 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 19:53:28,924 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 19:53:28,924 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:53:28,925 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-27 19:53:28,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:53:29,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:53:29,296 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:53:29,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:53:29,495 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:53:29,496 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:29 WrapperNode [2024-06-27 19:53:29,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:53:29,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:53:29,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:53:29,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:53:29,505 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,528 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,554 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-27 19:53:29,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:53:29,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:53:29,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:53:29,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:53:29,565 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,565 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,575 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,589 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 19:53:29,590 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,590 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,609 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,611 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,612 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,614 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:53:29,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:53:29,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:53:29,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:53:29,618 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 07:53:29" (1/1) ... [2024-06-27 19:53:29,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:53:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:53:29,656 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 19:53:29,680 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 19:53:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:53:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:53:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:53:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:53:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:53:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:53:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:53:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:53:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:53:29,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:53:29,700 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 19:53:29,859 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:53:29,861 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:53:30,120 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:53:30,120 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:53:30,359 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:53:30,359 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:53:30,360 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:53:30 BoogieIcfgContainer [2024-06-27 19:53:30,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:53:30,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:53:30,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:53:30,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:53:30,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:53:28" (1/4) ... [2024-06-27 19:53:30,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d5dc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:53:30, skipping insertion in model container [2024-06-27 19:53:30,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:28" (2/4) ... [2024-06-27 19:53:30,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d5dc3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:53:30, skipping insertion in model container [2024-06-27 19:53:30,372 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 07:53:29" (3/4) ... [2024-06-27 19:53:30,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d5dc3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:53:30, skipping insertion in model container [2024-06-27 19:53:30,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:53:30" (4/4) ... [2024-06-27 19:53:30,374 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-27 19:53:30,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:53:30,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:53:30,389 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:53:30,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:53:30,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:53:30,500 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 19:53:30,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:53:30,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:53:30,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:53:30,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 19:53:30,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:53:30,535 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;@1aa6c4f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:53:30,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:53:30,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:53:30,540 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:53:30,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:53:30,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:30,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:53:30,541 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 19:53:30,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 337095837, now seen corresponding path program 1 times [2024-06-27 19:53:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951847518] [2024-06-27 19:53:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:31,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:31,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951847518] [2024-06-27 19:53:31,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951847518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:31,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:31,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:53:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158244484] [2024-06-27 19:53:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:31,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:53:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:53:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:53:31,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 19:53:31,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:53:31,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:31,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 19:53:31,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:31,645 INFO L124 PetriNetUnfolderBase]: 162/314 cut-off events. [2024-06-27 19:53:31,645 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 19:53:31,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 314 events. 162/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1238 event pairs, 97 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 614. Up to 288 conditions per place. [2024-06-27 19:53:31,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 19:53:31,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-27 19:53:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:53:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:53:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-27 19:53:31,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 19:53:31,665 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-27 19:53:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-27 19:53:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:31,671 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 19:53:31,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-27 19:53:31,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 19:53:31,676 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 19:53:31,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:53:31,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:31,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:31,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:53:31,677 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 19:53:31,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1826570300, now seen corresponding path program 1 times [2024-06-27 19:53:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:31,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978133376] [2024-06-27 19:53:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:32,248 INFO 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 19:53:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978133376] [2024-06-27 19:53:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978133376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:53:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034722645] [2024-06-27 19:53:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:32,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:53:32,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:53:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:53:32,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 19:53:32,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:53:32,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:32,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 19:53:32,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:32,419 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-27 19:53:32,419 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-27 19:53:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 309 events. 159/309 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1225 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 685. Up to 274 conditions per place. [2024-06-27 19:53:32,425 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 19:53:32,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-27 19:53:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:53:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:53:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-27 19:53:32,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 19:53:32,429 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-27 19:53:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-27 19:53:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:53:32,434 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 19:53:32,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 19:53:32,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 19:53:32,436 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 19:53:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:53:32,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:32,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:32,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:53:32,438 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 19:53:32,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash 789105080, now seen corresponding path program 1 times [2024-06-27 19:53:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249393970] [2024-06-27 19:53:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:33,052 INFO 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 19:53:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:33,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249393970] [2024-06-27 19:53:33,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249393970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:33,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:53:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826208190] [2024-06-27 19:53:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:33,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:53:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:53:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:53:33,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 19:53:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 19:53:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 19:53:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:33,234 INFO L124 PetriNetUnfolderBase]: 187/359 cut-off events. [2024-06-27 19:53:33,235 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-27 19:53:33,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 359 events. 187/359 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1389 event pairs, 83 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 878. Up to 313 conditions per place. [2024-06-27 19:53:33,237 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 19:53:33,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 209 flow [2024-06-27 19:53:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:53:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:53:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-27 19:53:33,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-27 19:53:33,239 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 89 transitions. [2024-06-27 19:53:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 209 flow [2024-06-27 19:53:33,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:33,241 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-27 19:53:33,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 19:53:33,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 19:53:33,242 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-27 19:53:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 19:53:33,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:33,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:33,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:53:33,243 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 19:53:33,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash -670316147, now seen corresponding path program 1 times [2024-06-27 19:53:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38406933] [2024-06-27 19:53:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:33,837 INFO 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 19:53:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38406933] [2024-06-27 19:53:33,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38406933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:33,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:33,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:53:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353875467] [2024-06-27 19:53:33,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:53:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:53:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:53:33,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 19:53:33,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:33,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:33,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 19:53:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:34,022 INFO L124 PetriNetUnfolderBase]: 184/356 cut-off events. [2024-06-27 19:53:34,022 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-27 19:53:34,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 356 events. 184/356 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 65 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 948. Up to 299 conditions per place. [2024-06-27 19:53:34,025 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-27 19:53:34,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-27 19:53:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 19:53:34,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 19:53:34,027 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 105 transitions. [2024-06-27 19:53:34,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-27 19:53:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 242 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:34,030 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-27 19:53:34,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-27 19:53:34,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 19:53:34,031 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-27 19:53:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:34,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:34,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:53:34,032 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 19:53:34,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2063748116, now seen corresponding path program 1 times [2024-06-27 19:53:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734125676] [2024-06-27 19:53:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:34,574 INFO 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 19:53:34,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734125676] [2024-06-27 19:53:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734125676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:34,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:53:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918520542] [2024-06-27 19:53:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:53:34,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:53:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:53:34,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:34,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:34,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:34,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:34,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:34,897 INFO L124 PetriNetUnfolderBase]: 230/423 cut-off events. [2024-06-27 19:53:34,898 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-27 19:53:34,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 423 events. 230/423 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1590 event pairs, 100 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1230. Up to 402 conditions per place. [2024-06-27 19:53:34,901 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-27 19:53:34,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 233 flow [2024-06-27 19:53:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:53:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:53:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-06-27 19:53:34,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 19:53:34,904 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 66 transitions. [2024-06-27 19:53:34,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 233 flow [2024-06-27 19:53:34,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 212 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:34,910 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-27 19:53:34,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 19:53:34,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 19:53:34,916 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-27 19:53:34,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:34,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:34,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:53:34,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:53:34,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1874082682, now seen corresponding path program 1 times [2024-06-27 19:53:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850956804] [2024-06-27 19:53:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:35,803 INFO 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 19:53:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850956804] [2024-06-27 19:53:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850956804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:35,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517475534] [2024-06-27 19:53:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:35,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:35,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 19:53:35,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:35,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:35,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:36,098 INFO L124 PetriNetUnfolderBase]: 223/414 cut-off events. [2024-06-27 19:53:36,098 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2024-06-27 19:53:36,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 414 events. 223/414 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1557 event pairs, 58 based on Foata normal form. 2/415 useless extension candidates. Maximal degree in co-relation 1259. Up to 338 conditions per place. [2024-06-27 19:53:36,102 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-27 19:53:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 343 flow [2024-06-27 19:53:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 19:53:36,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 19:53:36,104 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 8 states and 130 transitions. [2024-06-27 19:53:36,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 343 flow [2024-06-27 19:53:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 332 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:36,107 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 200 flow [2024-06-27 19:53:36,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-27 19:53:36,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-27 19:53:36,108 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 200 flow [2024-06-27 19:53:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 19:53:36,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:36,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:53:36,109 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 19:53:36,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 448318990, now seen corresponding path program 1 times [2024-06-27 19:53:36,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321045163] [2024-06-27 19:53:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:36,717 INFO 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 19:53:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321045163] [2024-06-27 19:53:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321045163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747205823] [2024-06-27 19:53:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:36,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:37,122 INFO L124 PetriNetUnfolderBase]: 220/408 cut-off events. [2024-06-27 19:53:37,122 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-06-27 19:53:37,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 408 events. 220/408 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1488 event pairs, 58 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 1365. Up to 379 conditions per place. [2024-06-27 19:53:37,125 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-27 19:53:37,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 314 flow [2024-06-27 19:53:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-27 19:53:37,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:53:37,127 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 200 flow. Second operand 6 states and 78 transitions. [2024-06-27 19:53:37,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 314 flow [2024-06-27 19:53:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 285 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:37,131 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 204 flow [2024-06-27 19:53:37,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 19:53:37,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 19:53:37,132 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 204 flow [2024-06-27 19:53:37,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:37,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:37,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:37,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:53:37,133 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 19:53:37,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 451246899, now seen corresponding path program 1 times [2024-06-27 19:53:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:37,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849260220] [2024-06-27 19:53:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:37,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:37,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849260220] [2024-06-27 19:53:37,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849260220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:37,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:37,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855075214] [2024-06-27 19:53:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:37,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:37,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:37,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:37,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:37,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:37,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:38,017 INFO L124 PetriNetUnfolderBase]: 225/415 cut-off events. [2024-06-27 19:53:38,018 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2024-06-27 19:53:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 415 events. 225/415 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1539 event pairs, 58 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 1443. Up to 377 conditions per place. [2024-06-27 19:53:38,021 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-27 19:53:38,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 358 flow [2024-06-27 19:53:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-27 19:53:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 19:53:38,023 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 204 flow. Second operand 6 states and 82 transitions. [2024-06-27 19:53:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 358 flow [2024-06-27 19:53:38,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:38,026 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 234 flow [2024-06-27 19:53:38,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 19:53:38,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-27 19:53:38,027 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 234 flow [2024-06-27 19:53:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:38,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:38,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:53:38,028 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 19:53:38,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1031746389, now seen corresponding path program 2 times [2024-06-27 19:53:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:38,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031889559] [2024-06-27 19:53:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:38,607 INFO 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 19:53:38,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:38,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031889559] [2024-06-27 19:53:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031889559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:38,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:38,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042754693] [2024-06-27 19:53:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:38,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:38,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:38,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:38,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:38,864 INFO L124 PetriNetUnfolderBase]: 223/412 cut-off events. [2024-06-27 19:53:38,865 INFO L125 PetriNetUnfolderBase]: For 1666/1666 co-relation queries the response was YES. [2024-06-27 19:53:38,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 412 events. 223/412 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1536 event pairs, 57 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1505. Up to 387 conditions per place. [2024-06-27 19:53:38,869 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-06-27 19:53:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 340 flow [2024-06-27 19:53:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-27 19:53:38,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:53:38,870 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 234 flow. Second operand 6 states and 76 transitions. [2024-06-27 19:53:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 340 flow [2024-06-27 19:53:38,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 328 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:38,874 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 243 flow [2024-06-27 19:53:38,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 19:53:38,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 19:53:38,876 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 243 flow [2024-06-27 19:53:38,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:38,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:38,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:53:38,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:53:38,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:38,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2032978250, now seen corresponding path program 1 times [2024-06-27 19:53:38,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:38,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140432908] [2024-06-27 19:53:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:39,871 INFO 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 19:53:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140432908] [2024-06-27 19:53:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140432908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877623738] [2024-06-27 19:53:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:39,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:39,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:53:39,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:39,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:40,217 INFO L124 PetriNetUnfolderBase]: 217/402 cut-off events. [2024-06-27 19:53:40,218 INFO L125 PetriNetUnfolderBase]: For 2095/2095 co-relation queries the response was YES. [2024-06-27 19:53:40,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 402 events. 217/402 cut-off events. For 2095/2095 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1456 event pairs, 35 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1498. Up to 307 conditions per place. [2024-06-27 19:53:40,221 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2024-06-27 19:53:40,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 419 flow [2024-06-27 19:53:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 19:53:40,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 19:53:40,222 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 243 flow. Second operand 9 states and 140 transitions. [2024-06-27 19:53:40,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 419 flow [2024-06-27 19:53:40,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 398 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:40,226 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 242 flow [2024-06-27 19:53:40,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-06-27 19:53:40,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 19:53:40,230 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 242 flow [2024-06-27 19:53:40,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:53:40,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:40,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:40,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:53:40,231 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 19:53:40,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1103573389, now seen corresponding path program 1 times [2024-06-27 19:53:40,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:40,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043409027] [2024-06-27 19:53:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:40,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:40,938 INFO 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 19:53:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043409027] [2024-06-27 19:53:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043409027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:40,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:40,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531795317] [2024-06-27 19:53:40,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:40,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:40,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 242 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 19:53:40,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:40,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:40,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:41,188 INFO L124 PetriNetUnfolderBase]: 238/425 cut-off events. [2024-06-27 19:53:41,188 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-06-27 19:53:41,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 425 events. 238/425 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1509 event pairs, 53 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1653. Up to 381 conditions per place. [2024-06-27 19:53:41,192 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-27 19:53:41,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 434 flow [2024-06-27 19:53:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:53:41,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-27 19:53:41,194 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 242 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:53:41,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 434 flow [2024-06-27 19:53:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 398 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:41,199 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 267 flow [2024-06-27 19:53:41,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-27 19:53:41,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 19:53:41,200 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 267 flow [2024-06-27 19:53:41,200 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 19:53:41,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:41,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:53:41,201 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 19:53:41,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1103753127, now seen corresponding path program 1 times [2024-06-27 19:53:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356407118] [2024-06-27 19:53:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356407118] [2024-06-27 19:53:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356407118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:41,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444561454] [2024-06-27 19:53:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:41,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:41,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:41,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:41,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:42,164 INFO L124 PetriNetUnfolderBase]: 243/442 cut-off events. [2024-06-27 19:53:42,165 INFO L125 PetriNetUnfolderBase]: For 3157/3157 co-relation queries the response was YES. [2024-06-27 19:53:42,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 442 events. 243/442 cut-off events. For 3157/3157 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1621 event pairs, 56 based on Foata normal form. 3/444 useless extension candidates. Maximal degree in co-relation 1756. Up to 373 conditions per place. [2024-06-27 19:53:42,168 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-06-27 19:53:42,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 473 flow [2024-06-27 19:53:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-27 19:53:42,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-27 19:53:42,170 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 267 flow. Second operand 7 states and 97 transitions. [2024-06-27 19:53:42,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 473 flow [2024-06-27 19:53:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 452 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:42,175 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 320 flow [2024-06-27 19:53:42,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-27 19:53:42,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 19:53:42,176 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 320 flow [2024-06-27 19:53:42,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:42,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:42,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:53:42,177 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 19:53:42,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1103752879, now seen corresponding path program 2 times [2024-06-27 19:53:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904553324] [2024-06-27 19:53:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:42,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904553324] [2024-06-27 19:53:42,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904553324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:42,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:42,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:42,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826901572] [2024-06-27 19:53:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:42,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:42,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:42,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:42,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 320 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 19:53:42,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:42,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:42,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:43,139 INFO L124 PetriNetUnfolderBase]: 260/461 cut-off events. [2024-06-27 19:53:43,139 INFO L125 PetriNetUnfolderBase]: For 3651/3651 co-relation queries the response was YES. [2024-06-27 19:53:43,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 461 events. 260/461 cut-off events. For 3651/3651 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1653 event pairs, 55 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 1991. Up to 416 conditions per place. [2024-06-27 19:53:43,142 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2024-06-27 19:53:43,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 510 flow [2024-06-27 19:53:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 19:53:43,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-27 19:53:43,144 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 320 flow. Second operand 7 states and 87 transitions. [2024-06-27 19:53:43,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 510 flow [2024-06-27 19:53:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 499 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:43,150 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 360 flow [2024-06-27 19:53:43,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-27 19:53:43,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-27 19:53:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 360 flow [2024-06-27 19:53:43,151 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 19:53:43,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:43,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:43,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:53:43,151 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 19:53:43,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1919367885, now seen corresponding path program 3 times [2024-06-27 19:53:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442711651] [2024-06-27 19:53:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442711651] [2024-06-27 19:53:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442711651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:43,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:43,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804590526] [2024-06-27 19:53:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:43,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:43,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:43,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 360 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 19:53:43,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:43,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:43,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:44,049 INFO L124 PetriNetUnfolderBase]: 258/458 cut-off events. [2024-06-27 19:53:44,049 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2024-06-27 19:53:44,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 458 events. 258/458 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1636 event pairs, 54 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2037. Up to 441 conditions per place. [2024-06-27 19:53:44,053 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 19:53:44,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 496 flow [2024-06-27 19:53:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 19:53:44,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-27 19:53:44,054 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 360 flow. Second operand 7 states and 79 transitions. [2024-06-27 19:53:44,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 496 flow [2024-06-27 19:53:44,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 467 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:44,060 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 356 flow [2024-06-27 19:53:44,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-27 19:53:44,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-27 19:53:44,061 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 356 flow [2024-06-27 19:53:44,061 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 19:53:44,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:44,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:53:44,062 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 19:53:44,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 185180921, now seen corresponding path program 2 times [2024-06-27 19:53:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789919193] [2024-06-27 19:53:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:44,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:44,726 INFO 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 19:53:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789919193] [2024-06-27 19:53:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789919193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:44,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:44,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479770081] [2024-06-27 19:53:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:44,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:44,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:44,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:44,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:44,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:44,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:45,067 INFO L124 PetriNetUnfolderBase]: 253/459 cut-off events. [2024-06-27 19:53:45,067 INFO L125 PetriNetUnfolderBase]: For 4979/4979 co-relation queries the response was YES. [2024-06-27 19:53:45,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 459 events. 253/459 cut-off events. For 4979/4979 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1707 event pairs, 54 based on Foata normal form. 3/461 useless extension candidates. Maximal degree in co-relation 2059. Up to 403 conditions per place. [2024-06-27 19:53:45,072 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-27 19:53:45,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 552 flow [2024-06-27 19:53:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 19:53:45,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-27 19:53:45,073 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 356 flow. Second operand 7 states and 92 transitions. [2024-06-27 19:53:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 552 flow [2024-06-27 19:53:45,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 516 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:45,079 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 365 flow [2024-06-27 19:53:45,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-27 19:53:45,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-27 19:53:45,081 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 365 flow [2024-06-27 19:53:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:45,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:45,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:45,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:53:45,082 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 19:53:45,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1337846573, now seen corresponding path program 3 times [2024-06-27 19:53:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363307221] [2024-06-27 19:53:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:45,779 INFO 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 19:53:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363307221] [2024-06-27 19:53:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363307221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:45,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444249300] [2024-06-27 19:53:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:45,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:45,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:45,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 365 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:45,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:45,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:45,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:46,141 INFO L124 PetriNetUnfolderBase]: 247/450 cut-off events. [2024-06-27 19:53:46,141 INFO L125 PetriNetUnfolderBase]: For 5332/5332 co-relation queries the response was YES. [2024-06-27 19:53:46,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 450 events. 247/450 cut-off events. For 5332/5332 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1675 event pairs, 52 based on Foata normal form. 3/452 useless extension candidates. Maximal degree in co-relation 2034. Up to 411 conditions per place. [2024-06-27 19:53:46,145 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-27 19:53:46,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 505 flow [2024-06-27 19:53:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 19:53:46,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-27 19:53:46,147 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 365 flow. Second operand 7 states and 87 transitions. [2024-06-27 19:53:46,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 505 flow [2024-06-27 19:53:46,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 467 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:46,154 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 352 flow [2024-06-27 19:53:46,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-06-27 19:53:46,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-27 19:53:46,155 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 352 flow [2024-06-27 19:53:46,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:46,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:46,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:46,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:53:46,155 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 19:53:46,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1742340626, now seen corresponding path program 1 times [2024-06-27 19:53:46,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:46,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784552009] [2024-06-27 19:53:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784552009] [2024-06-27 19:53:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784552009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066777534] [2024-06-27 19:53:46,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:46,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:46,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 352 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 19:53:46,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:46,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:46,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:47,162 INFO L124 PetriNetUnfolderBase]: 264/469 cut-off events. [2024-06-27 19:53:47,162 INFO L125 PetriNetUnfolderBase]: For 5697/5697 co-relation queries the response was YES. [2024-06-27 19:53:47,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 469 events. 264/469 cut-off events. For 5697/5697 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1719 event pairs, 52 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2134. Up to 405 conditions per place. [2024-06-27 19:53:47,166 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-27 19:53:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 606 flow [2024-06-27 19:53:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-27 19:53:47,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 19:53:47,168 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 352 flow. Second operand 8 states and 102 transitions. [2024-06-27 19:53:47,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 606 flow [2024-06-27 19:53:47,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 580 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:47,175 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 405 flow [2024-06-27 19:53:47,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-06-27 19:53:47,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 19:53:47,175 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 405 flow [2024-06-27 19:53:47,176 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 19:53:47,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:47,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:47,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:53:47,177 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 19:53:47,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1241359640, now seen corresponding path program 2 times [2024-06-27 19:53:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602426427] [2024-06-27 19:53:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:47,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:47,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602426427] [2024-06-27 19:53:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602426427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495151985] [2024-06-27 19:53:47,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:47,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:47,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 405 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 19:53:47,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:47,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:47,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:48,172 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-27 19:53:48,172 INFO L125 PetriNetUnfolderBase]: For 6423/6423 co-relation queries the response was YES. [2024-06-27 19:53:48,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 474 events. 267/474 cut-off events. For 6423/6423 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1745 event pairs, 52 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 2253. Up to 409 conditions per place. [2024-06-27 19:53:48,176 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 23 changer transitions 0/78 dead transitions. [2024-06-27 19:53:48,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 643 flow [2024-06-27 19:53:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:53:48,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:53:48,177 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 405 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:53:48,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 643 flow [2024-06-27 19:53:48,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 602 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:48,185 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 431 flow [2024-06-27 19:53:48,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=431, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-27 19:53:48,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-27 19:53:48,186 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 431 flow [2024-06-27 19:53:48,187 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 19:53:48,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:48,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:48,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:53:48,187 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 19:53:48,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash -148962163, now seen corresponding path program 1 times [2024-06-27 19:53:48,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:48,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142704440] [2024-06-27 19:53:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:48,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:48,887 INFO 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 19:53:48,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:48,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142704440] [2024-06-27 19:53:48,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142704440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:48,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:48,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:48,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386815165] [2024-06-27 19:53:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:48,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:48,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:48,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:48,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 431 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 19:53:48,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:48,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:48,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:49,244 INFO L124 PetriNetUnfolderBase]: 286/505 cut-off events. [2024-06-27 19:53:49,245 INFO L125 PetriNetUnfolderBase]: For 7766/7766 co-relation queries the response was YES. [2024-06-27 19:53:49,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 505 events. 286/505 cut-off events. For 7766/7766 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1888 event pairs, 55 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2436. Up to 388 conditions per place. [2024-06-27 19:53:49,250 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 61 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-06-27 19:53:49,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 717 flow [2024-06-27 19:53:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 19:53:49,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-27 19:53:49,252 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 431 flow. Second operand 8 states and 107 transitions. [2024-06-27 19:53:49,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 717 flow [2024-06-27 19:53:49,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 680 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:49,264 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 477 flow [2024-06-27 19:53:49,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-27 19:53:49,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-27 19:53:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 477 flow [2024-06-27 19:53:49,265 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 19:53:49,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:49,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:53:49,266 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 19:53:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1246931487, now seen corresponding path program 2 times [2024-06-27 19:53:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584402795] [2024-06-27 19:53:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:49,985 INFO 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 19:53:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584402795] [2024-06-27 19:53:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584402795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:49,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529731228] [2024-06-27 19:53:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:50,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:50,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 477 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 19:53:50,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:50,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:50,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:50,282 INFO L124 PetriNetUnfolderBase]: 310/544 cut-off events. [2024-06-27 19:53:50,282 INFO L125 PetriNetUnfolderBase]: For 9319/9319 co-relation queries the response was YES. [2024-06-27 19:53:50,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 544 events. 310/544 cut-off events. For 9319/9319 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2067 event pairs, 63 based on Foata normal form. 3/546 useless extension candidates. Maximal degree in co-relation 2753. Up to 408 conditions per place. [2024-06-27 19:53:50,288 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 61 selfloop transitions, 27 changer transitions 0/90 dead transitions. [2024-06-27 19:53:50,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 809 flow [2024-06-27 19:53:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 19:53:50,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 19:53:50,291 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 477 flow. Second operand 8 states and 106 transitions. [2024-06-27 19:53:50,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 809 flow [2024-06-27 19:53:50,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 773 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:50,306 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 532 flow [2024-06-27 19:53:50,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-06-27 19:53:50,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-27 19:53:50,307 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 532 flow [2024-06-27 19:53:50,307 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 19:53:50,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:50,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:53:50,308 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 19:53:50,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -143398190, now seen corresponding path program 3 times [2024-06-27 19:53:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:50,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706136225] [2024-06-27 19:53:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:51,036 INFO 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 19:53:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706136225] [2024-06-27 19:53:51,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706136225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:51,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:51,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643013028] [2024-06-27 19:53:51,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:51,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:51,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:51,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 532 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 19:53:51,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:51,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:51,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:51,289 INFO L124 PetriNetUnfolderBase]: 313/549 cut-off events. [2024-06-27 19:53:51,289 INFO L125 PetriNetUnfolderBase]: For 9921/9921 co-relation queries the response was YES. [2024-06-27 19:53:51,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 549 events. 313/549 cut-off events. For 9921/9921 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2086 event pairs, 66 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 2874. Up to 483 conditions per place. [2024-06-27 19:53:51,294 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-27 19:53:51,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 780 flow [2024-06-27 19:53:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:53:51,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 19:53:51,296 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 532 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:53:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 780 flow [2024-06-27 19:53:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 741 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:51,306 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 560 flow [2024-06-27 19:53:51,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=560, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-27 19:53:51,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-27 19:53:51,307 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 560 flow [2024-06-27 19:53:51,308 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 19:53:51,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:51,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:51,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:53:51,308 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 19:53:51,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -143397973, now seen corresponding path program 3 times [2024-06-27 19:53:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180984254] [2024-06-27 19:53:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:51,993 INFO 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 19:53:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180984254] [2024-06-27 19:53:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180984254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:51,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:51,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979452379] [2024-06-27 19:53:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:52,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:52,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 560 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 19:53:52,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:52,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:52,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:52,276 INFO L124 PetriNetUnfolderBase]: 307/540 cut-off events. [2024-06-27 19:53:52,276 INFO L125 PetriNetUnfolderBase]: For 10696/10696 co-relation queries the response was YES. [2024-06-27 19:53:52,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 540 events. 307/540 cut-off events. For 10696/10696 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2049 event pairs, 61 based on Foata normal form. 3/542 useless extension candidates. Maximal degree in co-relation 2800. Up to 409 conditions per place. [2024-06-27 19:53:52,281 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-27 19:53:52,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 836 flow [2024-06-27 19:53:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 19:53:52,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:53:52,284 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 560 flow. Second operand 8 states and 108 transitions. [2024-06-27 19:53:52,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 836 flow [2024-06-27 19:53:52,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 793 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:52,299 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 574 flow [2024-06-27 19:53:52,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-06-27 19:53:52,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-27 19:53:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 574 flow [2024-06-27 19:53:52,300 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 19:53:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:52,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:53:52,301 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 19:53:52,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -619605644, now seen corresponding path program 1 times [2024-06-27 19:53:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609581838] [2024-06-27 19:53:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:53,278 INFO 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 19:53:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609581838] [2024-06-27 19:53:53,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609581838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:53,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:53,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:53,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653510036] [2024-06-27 19:53:53,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:53,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:53,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:53,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:53,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 19:53:53,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:53,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:53,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:53,711 INFO L124 PetriNetUnfolderBase]: 280/511 cut-off events. [2024-06-27 19:53:53,711 INFO L125 PetriNetUnfolderBase]: For 11033/11033 co-relation queries the response was YES. [2024-06-27 19:53:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 511 events. 280/511 cut-off events. For 11033/11033 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1988 event pairs, 51 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2675. Up to 449 conditions per place. [2024-06-27 19:53:53,715 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-27 19:53:53,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 760 flow [2024-06-27 19:53:53,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 19:53:53,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-27 19:53:53,717 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 574 flow. Second operand 8 states and 97 transitions. [2024-06-27 19:53:53,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 760 flow [2024-06-27 19:53:53,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 702 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:53,732 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 565 flow [2024-06-27 19:53:53,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=565, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2024-06-27 19:53:53,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-27 19:53:53,733 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 565 flow [2024-06-27 19:53:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 19:53:53,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:53,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:53:53,733 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 19:53:53,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1485632509, now seen corresponding path program 4 times [2024-06-27 19:53:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835496503] [2024-06-27 19:53:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:54,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835496503] [2024-06-27 19:53:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835496503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459742345] [2024-06-27 19:53:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:54,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:54,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 565 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 19:53:54,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:54,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:54,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:54,787 INFO L124 PetriNetUnfolderBase]: 312/549 cut-off events. [2024-06-27 19:53:54,787 INFO L125 PetriNetUnfolderBase]: For 12074/12074 co-relation queries the response was YES. [2024-06-27 19:53:54,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 549 events. 312/549 cut-off events. For 12074/12074 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2089 event pairs, 54 based on Foata normal form. 3/551 useless extension candidates. Maximal degree in co-relation 2879. Up to 478 conditions per place. [2024-06-27 19:53:54,792 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2024-06-27 19:53:54,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 845 flow [2024-06-27 19:53:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:53:54,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 19:53:54,794 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 565 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:53:54,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 845 flow [2024-06-27 19:53:54,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 809 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:54,808 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 586 flow [2024-06-27 19:53:54,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=586, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-27 19:53:54,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-27 19:53:54,809 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 586 flow [2024-06-27 19:53:54,809 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 19:53:54,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:54,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:54,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:53:54,810 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 19:53:54,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1485632726, now seen corresponding path program 4 times [2024-06-27 19:53:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:54,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322726523] [2024-06-27 19:53:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:55,496 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 19:53:55,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322726523] [2024-06-27 19:53:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322726523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990907041] [2024-06-27 19:53:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:55,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:55,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 586 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 19:53:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:55,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:55,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:55,782 INFO L124 PetriNetUnfolderBase]: 310/546 cut-off events. [2024-06-27 19:53:55,782 INFO L125 PetriNetUnfolderBase]: For 12298/12298 co-relation queries the response was YES. [2024-06-27 19:53:55,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 546 events. 310/546 cut-off events. For 12298/12298 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2078 event pairs, 60 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 2904. Up to 526 conditions per place. [2024-06-27 19:53:55,787 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-27 19:53:55,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 770 flow [2024-06-27 19:53:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:53:55,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:53:55,790 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 586 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:53:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 770 flow [2024-06-27 19:53:55,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 85 transitions, 705 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:55,806 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 550 flow [2024-06-27 19:53:55,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=550, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-06-27 19:53:55,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 19:53:55,807 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 550 flow [2024-06-27 19:53:55,807 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 19:53:55,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:55,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:55,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:53:55,808 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 19:53:55,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1485625069, now seen corresponding path program 5 times [2024-06-27 19:53:55,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:55,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164416088] [2024-06-27 19:53:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:56,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164416088] [2024-06-27 19:53:56,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164416088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:56,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:56,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758295148] [2024-06-27 19:53:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:56,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:56,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:56,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 550 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 19:53:56,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:56,806 INFO L124 PetriNetUnfolderBase]: 319/561 cut-off events. [2024-06-27 19:53:56,806 INFO L125 PetriNetUnfolderBase]: For 13750/13750 co-relation queries the response was YES. [2024-06-27 19:53:56,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 561 events. 319/561 cut-off events. For 13750/13750 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2164 event pairs, 60 based on Foata normal form. 3/563 useless extension candidates. Maximal degree in co-relation 2934. Up to 483 conditions per place. [2024-06-27 19:53:56,821 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-27 19:53:56,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 836 flow [2024-06-27 19:53:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 19:53:56,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-27 19:53:56,823 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 550 flow. Second operand 8 states and 99 transitions. [2024-06-27 19:53:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 836 flow [2024-06-27 19:53:56,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 776 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:53:56,837 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 547 flow [2024-06-27 19:53:56,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=547, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-27 19:53:56,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-27 19:53:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 547 flow [2024-06-27 19:53:56,839 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 19:53:56,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:56,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:53:56,839 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 19:53:56,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1476428299, now seen corresponding path program 6 times [2024-06-27 19:53:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949343122] [2024-06-27 19:53:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:57,485 INFO 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 19:53:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949343122] [2024-06-27 19:53:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949343122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983883517] [2024-06-27 19:53:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:53:57,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 547 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 19:53:57,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:57,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:53:57,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:57,806 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2024-06-27 19:53:57,807 INFO L125 PetriNetUnfolderBase]: For 13837/13837 co-relation queries the response was YES. [2024-06-27 19:53:57,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 552 events. 313/552 cut-off events. For 13837/13837 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2129 event pairs, 58 based on Foata normal form. 3/554 useless extension candidates. Maximal degree in co-relation 2870. Up to 516 conditions per place. [2024-06-27 19:53:57,810 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-27 19:53:57,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 755 flow [2024-06-27 19:53:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:53:57,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:53:57,812 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 547 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:53:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 755 flow [2024-06-27 19:53:57,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 91 transitions, 718 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:57,829 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 539 flow [2024-06-27 19:53:57,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-27 19:53:57,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-27 19:53:57,829 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 539 flow [2024-06-27 19:53:57,830 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 19:53:57,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:57,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:57,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:53:57,830 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 19:53:57,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1476089686, now seen corresponding path program 1 times [2024-06-27 19:53:57,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:57,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598817195] [2024-06-27 19:53:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598817195] [2024-06-27 19:53:59,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598817195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:59,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:59,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:53:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268684605] [2024-06-27 19:53:59,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:59,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:53:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:53:59,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:53:59,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:59,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:59,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:59,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:59,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:59,573 INFO L124 PetriNetUnfolderBase]: 282/519 cut-off events. [2024-06-27 19:53:59,573 INFO L125 PetriNetUnfolderBase]: For 13801/13801 co-relation queries the response was YES. [2024-06-27 19:53:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2713 conditions, 519 events. 282/519 cut-off events. For 13801/13801 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2048 event pairs, 56 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 2666. Up to 455 conditions per place. [2024-06-27 19:53:59,578 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 65 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-06-27 19:53:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 713 flow [2024-06-27 19:53:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:53:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-27 19:53:59,579 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 539 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:53:59,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 713 flow [2024-06-27 19:53:59,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 673 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:53:59,596 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 525 flow [2024-06-27 19:53:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-27 19:53:59,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-27 19:53:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 525 flow [2024-06-27 19:53:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:59,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:53:59,598 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 19:53:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -177202144, now seen corresponding path program 1 times [2024-06-27 19:53:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:59,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978340431] [2024-06-27 19:53:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978340431] [2024-06-27 19:54:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978340431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122419019] [2024-06-27 19:54:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:00,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:00,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 525 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 19:54:00,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:00,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:00,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:00,918 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2024-06-27 19:54:00,918 INFO L125 PetriNetUnfolderBase]: For 14413/14413 co-relation queries the response was YES. [2024-06-27 19:54:00,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 552 events. 313/552 cut-off events. For 14413/14413 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2110 event pairs, 60 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 2846. Up to 505 conditions per place. [2024-06-27 19:54:00,922 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-27 19:54:00,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 791 flow [2024-06-27 19:54:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:54:00,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-27 19:54:00,924 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 525 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:54:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 791 flow [2024-06-27 19:54:00,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 765 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:00,944 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 550 flow [2024-06-27 19:54:00,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-06-27 19:54:00,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-27 19:54:00,945 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 550 flow [2024-06-27 19:54:00,945 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 19:54:00,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:00,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:00,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:54:00,946 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 19:54:00,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash -177197308, now seen corresponding path program 1 times [2024-06-27 19:54:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:00,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343022651] [2024-06-27 19:54:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:01,679 INFO 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 19:54:01,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343022651] [2024-06-27 19:54:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343022651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340058928] [2024-06-27 19:54:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:01,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:01,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 550 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 19:54:01,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:01,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:01,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:01,951 INFO L124 PetriNetUnfolderBase]: 332/583 cut-off events. [2024-06-27 19:54:01,952 INFO L125 PetriNetUnfolderBase]: For 17088/17088 co-relation queries the response was YES. [2024-06-27 19:54:01,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 583 events. 332/583 cut-off events. For 17088/17088 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2291 event pairs, 54 based on Foata normal form. 3/585 useless extension candidates. Maximal degree in co-relation 3073. Up to 359 conditions per place. [2024-06-27 19:54:01,955 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 42 changer transitions 0/112 dead transitions. [2024-06-27 19:54:01,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 112 transitions, 926 flow [2024-06-27 19:54:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 19:54:01,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 19:54:01,956 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 550 flow. Second operand 9 states and 123 transitions. [2024-06-27 19:54:01,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 112 transitions, 926 flow [2024-06-27 19:54:01,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 891 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:01,973 INFO L231 Difference]: Finished difference. Result has 103 places, 85 transitions, 636 flow [2024-06-27 19:54:01,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=636, PETRI_PLACES=103, PETRI_TRANSITIONS=85} [2024-06-27 19:54:01,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-27 19:54:01,974 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 85 transitions, 636 flow [2024-06-27 19:54:01,974 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 19:54:01,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:01,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:01,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:54:01,974 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 19:54:01,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash -177197494, now seen corresponding path program 2 times [2024-06-27 19:54:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318601578] [2024-06-27 19:54:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:02,703 INFO 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 19:54:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:02,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318601578] [2024-06-27 19:54:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318601578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711358134] [2024-06-27 19:54:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:02,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:02,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 85 transitions, 636 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 19:54:02,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:02,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:02,966 INFO L124 PetriNetUnfolderBase]: 335/588 cut-off events. [2024-06-27 19:54:02,966 INFO L125 PetriNetUnfolderBase]: For 17550/17550 co-relation queries the response was YES. [2024-06-27 19:54:02,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 588 events. 335/588 cut-off events. For 17550/17550 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2315 event pairs, 65 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3265. Up to 500 conditions per place. [2024-06-27 19:54:02,971 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 31 changer transitions 0/108 dead transitions. [2024-06-27 19:54:02,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 990 flow [2024-06-27 19:54:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 19:54:02,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 19:54:02,972 INFO L175 Difference]: Start difference. First operand has 103 places, 85 transitions, 636 flow. Second operand 9 states and 113 transitions. [2024-06-27 19:54:02,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 990 flow [2024-06-27 19:54:02,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 108 transitions, 932 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:02,994 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 685 flow [2024-06-27 19:54:02,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=685, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2024-06-27 19:54:02,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-27 19:54:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 685 flow [2024-06-27 19:54:02,996 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 19:54:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:02,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:54:02,996 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 19:54:02,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash -322865524, now seen corresponding path program 3 times [2024-06-27 19:54:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223548516] [2024-06-27 19:54:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:03,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:03,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223548516] [2024-06-27 19:54:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223548516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:03,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:03,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130142045] [2024-06-27 19:54:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:03,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:03,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:03,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 685 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 19:54:03,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:03,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:03,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:03,972 INFO L124 PetriNetUnfolderBase]: 338/593 cut-off events. [2024-06-27 19:54:03,972 INFO L125 PetriNetUnfolderBase]: For 18769/18769 co-relation queries the response was YES. [2024-06-27 19:54:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 593 events. 338/593 cut-off events. For 18769/18769 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2338 event pairs, 65 based on Foata normal form. 1/593 useless extension candidates. Maximal degree in co-relation 3372. Up to 504 conditions per place. [2024-06-27 19:54:03,976 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 31 changer transitions 0/107 dead transitions. [2024-06-27 19:54:03,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 1017 flow [2024-06-27 19:54:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 19:54:03,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:54:03,977 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 685 flow. Second operand 9 states and 111 transitions. [2024-06-27 19:54:03,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 1017 flow [2024-06-27 19:54:03,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 966 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:03,994 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 723 flow [2024-06-27 19:54:03,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=723, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-06-27 19:54:03,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-27 19:54:03,995 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 723 flow [2024-06-27 19:54:03,995 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 19:54:03,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:03,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:03,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:54:03,996 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 19:54:03,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -156631558, now seen corresponding path program 2 times [2024-06-27 19:54:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:03,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723657357] [2024-06-27 19:54:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:04,673 INFO 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 19:54:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723657357] [2024-06-27 19:54:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723657357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:04,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:04,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:04,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913030795] [2024-06-27 19:54:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:04,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:04,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 723 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 19:54:04,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:04,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:05,022 INFO L124 PetriNetUnfolderBase]: 362/632 cut-off events. [2024-06-27 19:54:05,022 INFO L125 PetriNetUnfolderBase]: For 22426/22426 co-relation queries the response was YES. [2024-06-27 19:54:05,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 632 events. 362/632 cut-off events. For 22426/22426 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2543 event pairs, 52 based on Foata normal form. 3/634 useless extension candidates. Maximal degree in co-relation 3662. Up to 389 conditions per place. [2024-06-27 19:54:05,027 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2024-06-27 19:54:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 1189 flow [2024-06-27 19:54:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 19:54:05,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-27 19:54:05,029 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 723 flow. Second operand 9 states and 125 transitions. [2024-06-27 19:54:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 1189 flow [2024-06-27 19:54:05,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 1133 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:05,062 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 778 flow [2024-06-27 19:54:05,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-27 19:54:05,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-27 19:54:05,063 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 778 flow [2024-06-27 19:54:05,063 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 19:54:05,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:05,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:54:05,064 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 19:54:05,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1822196078, now seen corresponding path program 3 times [2024-06-27 19:54:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103394462] [2024-06-27 19:54:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103394462] [2024-06-27 19:54:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103394462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584934033] [2024-06-27 19:54:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:05,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:05,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 778 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 19:54:05,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:05,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:05,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:06,095 INFO L124 PetriNetUnfolderBase]: 356/623 cut-off events. [2024-06-27 19:54:06,095 INFO L125 PetriNetUnfolderBase]: For 22346/22346 co-relation queries the response was YES. [2024-06-27 19:54:06,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 623 events. 356/623 cut-off events. For 22346/22346 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2505 event pairs, 54 based on Foata normal form. 3/625 useless extension candidates. Maximal degree in co-relation 3634. Up to 385 conditions per place. [2024-06-27 19:54:06,101 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 40 changer transitions 0/119 dead transitions. [2024-06-27 19:54:06,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 119 transitions, 1140 flow [2024-06-27 19:54:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 19:54:06,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 19:54:06,102 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 778 flow. Second operand 9 states and 121 transitions. [2024-06-27 19:54:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 119 transitions, 1140 flow [2024-06-27 19:54:06,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 119 transitions, 1079 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:06,139 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 802 flow [2024-06-27 19:54:06,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=802, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-06-27 19:54:06,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-27 19:54:06,140 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 802 flow [2024-06-27 19:54:06,140 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 19:54:06,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:06,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:06,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:54:06,140 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 19:54:06,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash -65974, now seen corresponding path program 4 times [2024-06-27 19:54:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725467155] [2024-06-27 19:54:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:06,862 INFO 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 19:54:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725467155] [2024-06-27 19:54:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725467155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:06,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:06,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928072931] [2024-06-27 19:54:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:06,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:06,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 802 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 19:54:06,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:06,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:06,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:07,096 INFO L124 PetriNetUnfolderBase]: 359/628 cut-off events. [2024-06-27 19:54:07,097 INFO L125 PetriNetUnfolderBase]: For 22660/22660 co-relation queries the response was YES. [2024-06-27 19:54:07,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 628 events. 359/628 cut-off events. For 22660/22660 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2530 event pairs, 69 based on Foata normal form. 1/628 useless extension candidates. Maximal degree in co-relation 3728. Up to 538 conditions per place. [2024-06-27 19:54:07,101 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 32 changer transitions 0/110 dead transitions. [2024-06-27 19:54:07,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 110 transitions, 1136 flow [2024-06-27 19:54:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:54:07,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-27 19:54:07,103 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 802 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:54:07,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 110 transitions, 1136 flow [2024-06-27 19:54:07,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 1051 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:07,141 INFO L231 Difference]: Finished difference. Result has 119 places, 97 transitions, 806 flow [2024-06-27 19:54:07,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=806, PETRI_PLACES=119, PETRI_TRANSITIONS=97} [2024-06-27 19:54:07,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-27 19:54:07,142 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 97 transitions, 806 flow [2024-06-27 19:54:07,142 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 19:54:07,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:07,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:54:07,143 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 19:54:07,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -65788, now seen corresponding path program 4 times [2024-06-27 19:54:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105717078] [2024-06-27 19:54:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:07,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:07,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105717078] [2024-06-27 19:54:07,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105717078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:07,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:07,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201173179] [2024-06-27 19:54:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:07,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:07,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:07,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 97 transitions, 806 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 19:54:07,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:07,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:07,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:08,208 INFO L124 PetriNetUnfolderBase]: 383/667 cut-off events. [2024-06-27 19:54:08,209 INFO L125 PetriNetUnfolderBase]: For 26972/26972 co-relation queries the response was YES. [2024-06-27 19:54:08,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 667 events. 383/667 cut-off events. For 26972/26972 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2726 event pairs, 70 based on Foata normal form. 3/669 useless extension candidates. Maximal degree in co-relation 3941. Up to 410 conditions per place. [2024-06-27 19:54:08,214 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 41 changer transitions 0/125 dead transitions. [2024-06-27 19:54:08,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 1286 flow [2024-06-27 19:54:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 19:54:08,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 19:54:08,216 INFO L175 Difference]: Start difference. First operand has 119 places, 97 transitions, 806 flow. Second operand 9 states and 123 transitions. [2024-06-27 19:54:08,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 1286 flow [2024-06-27 19:54:08,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 1227 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:08,255 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 866 flow [2024-06-27 19:54:08,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2024-06-27 19:54:08,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-27 19:54:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 866 flow [2024-06-27 19:54:08,256 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 19:54:08,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:08,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:08,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:54:08,257 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 19:54:08,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash -150138298, now seen corresponding path program 5 times [2024-06-27 19:54:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:08,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176479883] [2024-06-27 19:54:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:08,940 INFO 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 19:54:08,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176479883] [2024-06-27 19:54:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176479883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:08,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:08,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667747758] [2024-06-27 19:54:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:08,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:09,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 866 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 19:54:09,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:09,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:09,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:09,242 INFO L124 PetriNetUnfolderBase]: 392/682 cut-off events. [2024-06-27 19:54:09,243 INFO L125 PetriNetUnfolderBase]: For 28599/28599 co-relation queries the response was YES. [2024-06-27 19:54:09,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 682 events. 392/682 cut-off events. For 28599/28599 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2813 event pairs, 76 based on Foata normal form. 3/684 useless extension candidates. Maximal degree in co-relation 4106. Up to 418 conditions per place. [2024-06-27 19:54:09,248 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-27 19:54:09,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 1332 flow [2024-06-27 19:54:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 19:54:09,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:54:09,254 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 866 flow. Second operand 9 states and 120 transitions. [2024-06-27 19:54:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 1332 flow [2024-06-27 19:54:09,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 1267 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:09,299 INFO L231 Difference]: Finished difference. Result has 126 places, 103 transitions, 916 flow [2024-06-27 19:54:09,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=916, PETRI_PLACES=126, PETRI_TRANSITIONS=103} [2024-06-27 19:54:09,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-27 19:54:09,300 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 103 transitions, 916 flow [2024-06-27 19:54:09,300 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 19:54:09,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:09,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:09,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:54:09,301 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 19:54:09,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -150368938, now seen corresponding path program 6 times [2024-06-27 19:54:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358545308] [2024-06-27 19:54:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:10,058 INFO 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 19:54:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358545308] [2024-06-27 19:54:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358545308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:10,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:10,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456882129] [2024-06-27 19:54:10,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:10,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:10,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:10,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:10,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 103 transitions, 916 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 19:54:10,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:10,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:10,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:10,334 INFO L124 PetriNetUnfolderBase]: 386/673 cut-off events. [2024-06-27 19:54:10,334 INFO L125 PetriNetUnfolderBase]: For 28242/28242 co-relation queries the response was YES. [2024-06-27 19:54:10,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 673 events. 386/673 cut-off events. For 28242/28242 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2773 event pairs, 70 based on Foata normal form. 3/675 useless extension candidates. Maximal degree in co-relation 4026. Up to 414 conditions per place. [2024-06-27 19:54:10,338 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 42 changer transitions 0/126 dead transitions. [2024-06-27 19:54:10,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 126 transitions, 1298 flow [2024-06-27 19:54:10,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 19:54:10,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 19:54:10,340 INFO L175 Difference]: Start difference. First operand has 126 places, 103 transitions, 916 flow. Second operand 9 states and 123 transitions. [2024-06-27 19:54:10,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 126 transitions, 1298 flow [2024-06-27 19:54:10,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 1219 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:10,373 INFO L231 Difference]: Finished difference. Result has 129 places, 103 transitions, 926 flow [2024-06-27 19:54:10,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=926, PETRI_PLACES=129, PETRI_TRANSITIONS=103} [2024-06-27 19:54:10,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-27 19:54:10,373 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 103 transitions, 926 flow [2024-06-27 19:54:10,374 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 19:54:10,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:10,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:54:10,374 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 19:54:10,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash -606803572, now seen corresponding path program 7 times [2024-06-27 19:54:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888901808] [2024-06-27 19:54:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888901808] [2024-06-27 19:54:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888901808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:11,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695426156] [2024-06-27 19:54:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:11,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:11,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:11,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 103 transitions, 926 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 19:54:11,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:11,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:11,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:11,307 INFO L124 PetriNetUnfolderBase]: 410/712 cut-off events. [2024-06-27 19:54:11,307 INFO L125 PetriNetUnfolderBase]: For 32154/32154 co-relation queries the response was YES. [2024-06-27 19:54:11,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 712 events. 410/712 cut-off events. For 32154/32154 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2977 event pairs, 68 based on Foata normal form. 3/714 useless extension candidates. Maximal degree in co-relation 4325. Up to 585 conditions per place. [2024-06-27 19:54:11,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-27 19:54:11,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 126 transitions, 1418 flow [2024-06-27 19:54:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:54:11,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:54:11,314 INFO L175 Difference]: Start difference. First operand has 129 places, 103 transitions, 926 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:54:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 126 transitions, 1418 flow [2024-06-27 19:54:11,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 1300 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:11,349 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 907 flow [2024-06-27 19:54:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-06-27 19:54:11,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-27 19:54:11,350 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 907 flow [2024-06-27 19:54:11,350 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 19:54:11,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:11,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:11,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:54:11,351 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 19:54:11,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026896, now seen corresponding path program 8 times [2024-06-27 19:54:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361934903] [2024-06-27 19:54:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:12,112 INFO 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 19:54:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361934903] [2024-06-27 19:54:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361934903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139878459] [2024-06-27 19:54:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:12,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:12,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 907 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 19:54:12,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:12,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:12,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:12,434 INFO L124 PetriNetUnfolderBase]: 404/703 cut-off events. [2024-06-27 19:54:12,434 INFO L125 PetriNetUnfolderBase]: For 31273/31273 co-relation queries the response was YES. [2024-06-27 19:54:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 703 events. 404/703 cut-off events. For 31273/31273 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2946 event pairs, 66 based on Foata normal form. 3/705 useless extension candidates. Maximal degree in co-relation 4139. Up to 581 conditions per place. [2024-06-27 19:54:12,438 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 27 changer transitions 0/125 dead transitions. [2024-06-27 19:54:12,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 125 transitions, 1277 flow [2024-06-27 19:54:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 19:54:12,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 19:54:12,439 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 907 flow. Second operand 9 states and 110 transitions. [2024-06-27 19:54:12,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 125 transitions, 1277 flow [2024-06-27 19:54:12,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1187 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:12,478 INFO L231 Difference]: Finished difference. Result has 131 places, 107 transitions, 876 flow [2024-06-27 19:54:12,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=876, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2024-06-27 19:54:12,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-27 19:54:12,479 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 876 flow [2024-06-27 19:54:12,479 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 19:54:12,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:12,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:54:12,480 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 19:54:12,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1485491864, now seen corresponding path program 1 times [2024-06-27 19:54:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604757510] [2024-06-27 19:54:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:12,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604757510] [2024-06-27 19:54:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604757510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:13,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167175028] [2024-06-27 19:54:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:13,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:13,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 876 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 19:54:13,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:13,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:13,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:13,807 INFO L124 PetriNetUnfolderBase]: 400/697 cut-off events. [2024-06-27 19:54:13,807 INFO L125 PetriNetUnfolderBase]: For 30219/30219 co-relation queries the response was YES. [2024-06-27 19:54:13,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 697 events. 400/697 cut-off events. For 30219/30219 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2898 event pairs, 74 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 4061. Up to 661 conditions per place. [2024-06-27 19:54:13,811 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2024-06-27 19:54:13,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 121 transitions, 1160 flow [2024-06-27 19:54:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:54:13,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:54:13,812 INFO L175 Difference]: Start difference. First operand has 131 places, 107 transitions, 876 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:54:13,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 121 transitions, 1160 flow [2024-06-27 19:54:13,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1082 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:13,855 INFO L231 Difference]: Finished difference. Result has 132 places, 109 transitions, 855 flow [2024-06-27 19:54:13,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=855, PETRI_PLACES=132, PETRI_TRANSITIONS=109} [2024-06-27 19:54:13,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-27 19:54:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 109 transitions, 855 flow [2024-06-27 19:54:13,856 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 19:54:13,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:13,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:54:13,856 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 19:54:13,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1938970816, now seen corresponding path program 9 times [2024-06-27 19:54:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762784807] [2024-06-27 19:54:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:14,571 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 19:54:14,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762784807] [2024-06-27 19:54:14,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762784807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:14,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:14,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:14,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542897449] [2024-06-27 19:54:14,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:14,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:14,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:14,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:14,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:14,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:14,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 109 transitions, 855 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 19:54:14,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:14,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:14,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:14,863 INFO L124 PetriNetUnfolderBase]: 409/712 cut-off events. [2024-06-27 19:54:14,863 INFO L125 PetriNetUnfolderBase]: For 32208/32208 co-relation queries the response was YES. [2024-06-27 19:54:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 712 events. 409/712 cut-off events. For 32208/32208 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2986 event pairs, 77 based on Foata normal form. 3/714 useless extension candidates. Maximal degree in co-relation 4088. Up to 583 conditions per place. [2024-06-27 19:54:14,867 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-06-27 19:54:14,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 129 transitions, 1253 flow [2024-06-27 19:54:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:54:14,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:54:14,869 INFO L175 Difference]: Start difference. First operand has 132 places, 109 transitions, 855 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:54:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 129 transitions, 1253 flow [2024-06-27 19:54:14,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 129 transitions, 1212 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:14,919 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 887 flow [2024-06-27 19:54:14,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2024-06-27 19:54:14,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-27 19:54:14,920 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 887 flow [2024-06-27 19:54:14,920 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 19:54:14,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:14,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:14,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:54:14,920 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 19:54:14,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1938733480, now seen corresponding path program 5 times [2024-06-27 19:54:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424102268] [2024-06-27 19:54:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424102268] [2024-06-27 19:54:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424102268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:15,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:15,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:15,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105582550] [2024-06-27 19:54:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:15,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:15,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:15,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:15,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 887 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 19:54:15,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:15,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:15,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:15,887 INFO L124 PetriNetUnfolderBase]: 407/709 cut-off events. [2024-06-27 19:54:15,887 INFO L125 PetriNetUnfolderBase]: For 31302/31302 co-relation queries the response was YES. [2024-06-27 19:54:15,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 709 events. 407/709 cut-off events. For 31302/31302 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2960 event pairs, 85 based on Foata normal form. 1/709 useless extension candidates. Maximal degree in co-relation 4104. Up to 686 conditions per place. [2024-06-27 19:54:15,891 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2024-06-27 19:54:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 120 transitions, 1143 flow [2024-06-27 19:54:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:54:15,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 19:54:15,894 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 887 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:54:15,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 120 transitions, 1143 flow [2024-06-27 19:54:15,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 120 transitions, 1092 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:15,947 INFO L231 Difference]: Finished difference. Result has 137 places, 111 transitions, 869 flow [2024-06-27 19:54:15,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=137, PETRI_TRANSITIONS=111} [2024-06-27 19:54:15,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-27 19:54:15,948 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 111 transitions, 869 flow [2024-06-27 19:54:15,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:15,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:15,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:15,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:54:15,948 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 19:54:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1873278282, now seen corresponding path program 10 times [2024-06-27 19:54:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:15,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48279195] [2024-06-27 19:54:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:16,545 INFO 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 19:54:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48279195] [2024-06-27 19:54:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48279195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:16,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130389788] [2024-06-27 19:54:16,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:16,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:16,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 111 transitions, 869 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 19:54:16,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:16,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:16,881 INFO L124 PetriNetUnfolderBase]: 401/700 cut-off events. [2024-06-27 19:54:16,881 INFO L125 PetriNetUnfolderBase]: For 31766/31766 co-relation queries the response was YES. [2024-06-27 19:54:16,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 700 events. 401/700 cut-off events. For 31766/31766 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2946 event pairs, 75 based on Foata normal form. 3/702 useless extension candidates. Maximal degree in co-relation 3927. Up to 651 conditions per place. [2024-06-27 19:54:16,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 14 changer transitions 0/126 dead transitions. [2024-06-27 19:54:16,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 126 transitions, 1155 flow [2024-06-27 19:54:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:54:16,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:54:16,887 INFO L175 Difference]: Start difference. First operand has 137 places, 111 transitions, 869 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:54:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 126 transitions, 1155 flow [2024-06-27 19:54:16,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 126 transitions, 1079 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:16,941 INFO L231 Difference]: Finished difference. Result has 136 places, 111 transitions, 826 flow [2024-06-27 19:54:16,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=826, PETRI_PLACES=136, PETRI_TRANSITIONS=111} [2024-06-27 19:54:16,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-27 19:54:16,941 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 111 transitions, 826 flow [2024-06-27 19:54:16,942 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 19:54:16,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:16,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:54:16,942 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 19:54:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash -201493863, now seen corresponding path program 1 times [2024-06-27 19:54:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900617] [2024-06-27 19:54:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:17,894 INFO 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 19:54:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900617] [2024-06-27 19:54:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514702379] [2024-06-27 19:54:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:18,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:18,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 111 transitions, 826 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 19:54:18,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:18,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:18,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:18,313 INFO L124 PetriNetUnfolderBase]: 404/705 cut-off events. [2024-06-27 19:54:18,313 INFO L125 PetriNetUnfolderBase]: For 31248/31248 co-relation queries the response was YES. [2024-06-27 19:54:18,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 705 events. 404/705 cut-off events. For 31248/31248 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2958 event pairs, 82 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3969. Up to 644 conditions per place. [2024-06-27 19:54:18,317 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 18 changer transitions 0/139 dead transitions. [2024-06-27 19:54:18,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 1182 flow [2024-06-27 19:54:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:54:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:54:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:54:18,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:54:18,319 INFO L175 Difference]: Start difference. First operand has 136 places, 111 transitions, 826 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:54:18,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 1182 flow [2024-06-27 19:54:18,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 1121 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:18,379 INFO L231 Difference]: Finished difference. Result has 137 places, 113 transitions, 829 flow [2024-06-27 19:54:18,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2024-06-27 19:54:18,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-27 19:54:18,380 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 829 flow [2024-06-27 19:54:18,380 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 19:54:18,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:18,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:18,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:54:18,380 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 19:54:18,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1201872942, now seen corresponding path program 1 times [2024-06-27 19:54:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:18,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524322644] [2024-06-27 19:54:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:18,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:19,153 INFO 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 19:54:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524322644] [2024-06-27 19:54:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524322644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:19,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:19,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:19,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625222494] [2024-06-27 19:54:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:19,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:19,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 829 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 19:54:19,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:19,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:19,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:19,540 INFO L124 PetriNetUnfolderBase]: 413/720 cut-off events. [2024-06-27 19:54:19,540 INFO L125 PetriNetUnfolderBase]: For 34547/34547 co-relation queries the response was YES. [2024-06-27 19:54:19,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 720 events. 413/720 cut-off events. For 34547/34547 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3049 event pairs, 85 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 4066. Up to 664 conditions per place. [2024-06-27 19:54:19,544 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-06-27 19:54:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 1185 flow [2024-06-27 19:54:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:54:19,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:54:19,545 INFO L175 Difference]: Start difference. First operand has 137 places, 113 transitions, 829 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:54:19,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 1185 flow [2024-06-27 19:54:19,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 1139 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:19,606 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 846 flow [2024-06-27 19:54:19,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=846, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-06-27 19:54:19,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-27 19:54:19,607 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 846 flow [2024-06-27 19:54:19,607 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 19:54:19,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:19,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:19,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:54:19,608 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 19:54:19,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1198148292, now seen corresponding path program 2 times [2024-06-27 19:54:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805456143] [2024-06-27 19:54:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:20,287 INFO 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 19:54:20,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805456143] [2024-06-27 19:54:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805456143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:20,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:20,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599419438] [2024-06-27 19:54:20,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:20,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:20,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:20,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 846 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 19:54:20,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:20,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:20,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:20,634 INFO L124 PetriNetUnfolderBase]: 447/775 cut-off events. [2024-06-27 19:54:20,634 INFO L125 PetriNetUnfolderBase]: For 41766/41766 co-relation queries the response was YES. [2024-06-27 19:54:20,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4675 conditions, 775 events. 447/775 cut-off events. For 41766/41766 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3375 event pairs, 54 based on Foata normal form. 3/777 useless extension candidates. Maximal degree in co-relation 4607. Up to 368 conditions per place. [2024-06-27 19:54:20,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 89 selfloop transitions, 61 changer transitions 0/152 dead transitions. [2024-06-27 19:54:20,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 152 transitions, 1488 flow [2024-06-27 19:54:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 19:54:20,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 19:54:20,640 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 846 flow. Second operand 10 states and 138 transitions. [2024-06-27 19:54:20,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 152 transitions, 1488 flow [2024-06-27 19:54:20,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 152 transitions, 1441 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:20,709 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1008 flow [2024-06-27 19:54:20,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1008, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-27 19:54:20,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-27 19:54:20,709 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1008 flow [2024-06-27 19:54:20,709 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 19:54:20,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:20,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:20,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:54:20,710 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 19:54:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash -565978157, now seen corresponding path program 2 times [2024-06-27 19:54:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105480869] [2024-06-27 19:54:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:21,584 INFO 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 19:54:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105480869] [2024-06-27 19:54:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105480869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:21,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486906642] [2024-06-27 19:54:21,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:21,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:21,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1008 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 19:54:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:21,902 INFO L124 PetriNetUnfolderBase]: 450/780 cut-off events. [2024-06-27 19:54:21,903 INFO L125 PetriNetUnfolderBase]: For 41835/41835 co-relation queries the response was YES. [2024-06-27 19:54:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 780 events. 450/780 cut-off events. For 41835/41835 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3372 event pairs, 93 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 4825. Up to 688 conditions per place. [2024-06-27 19:54:21,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 37 changer transitions 0/142 dead transitions. [2024-06-27 19:54:21,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 142 transitions, 1356 flow [2024-06-27 19:54:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:54:21,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 19:54:21,911 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1008 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:54:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 142 transitions, 1356 flow [2024-06-27 19:54:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 1276 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:22,005 INFO L231 Difference]: Finished difference. Result has 145 places, 123 transitions, 1033 flow [2024-06-27 19:54:22,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1033, PETRI_PLACES=145, PETRI_TRANSITIONS=123} [2024-06-27 19:54:22,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-27 19:54:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 123 transitions, 1033 flow [2024-06-27 19:54:22,006 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 19:54:22,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:22,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:54:22,006 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 19:54:22,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1198153872, now seen corresponding path program 3 times [2024-06-27 19:54:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245835161] [2024-06-27 19:54:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:22,738 INFO 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 19:54:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245835161] [2024-06-27 19:54:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245835161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99454689] [2024-06-27 19:54:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:22,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:22,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 123 transitions, 1033 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:22,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:22,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:23,130 INFO L124 PetriNetUnfolderBase]: 444/771 cut-off events. [2024-06-27 19:54:23,131 INFO L125 PetriNetUnfolderBase]: For 42257/42257 co-relation queries the response was YES. [2024-06-27 19:54:23,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 771 events. 444/771 cut-off events. For 42257/42257 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3352 event pairs, 52 based on Foata normal form. 3/773 useless extension candidates. Maximal degree in co-relation 4694. Up to 369 conditions per place. [2024-06-27 19:54:23,136 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 60 changer transitions 0/155 dead transitions. [2024-06-27 19:54:23,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 155 transitions, 1519 flow [2024-06-27 19:54:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 19:54:23,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:54:23,139 INFO L175 Difference]: Start difference. First operand has 145 places, 123 transitions, 1033 flow. Second operand 10 states and 140 transitions. [2024-06-27 19:54:23,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 155 transitions, 1519 flow [2024-06-27 19:54:23,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 155 transitions, 1420 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:23,213 INFO L231 Difference]: Finished difference. Result has 147 places, 123 transitions, 1059 flow [2024-06-27 19:54:23,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1059, PETRI_PLACES=147, PETRI_TRANSITIONS=123} [2024-06-27 19:54:23,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-27 19:54:23,213 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 123 transitions, 1059 flow [2024-06-27 19:54:23,213 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 19:54:23,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:23,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:23,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:54:23,214 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 19:54:23,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash -195983458, now seen corresponding path program 4 times [2024-06-27 19:54:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239591223] [2024-06-27 19:54:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:23,899 INFO 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 19:54:23,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:23,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239591223] [2024-06-27 19:54:23,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239591223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:23,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:23,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:23,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964927041] [2024-06-27 19:54:23,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:23,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:23,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:23,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:23,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:23,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 123 transitions, 1059 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 19:54:23,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:23,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:23,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:24,234 INFO L124 PetriNetUnfolderBase]: 468/810 cut-off events. [2024-06-27 19:54:24,234 INFO L125 PetriNetUnfolderBase]: For 47856/47856 co-relation queries the response was YES. [2024-06-27 19:54:24,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5234 conditions, 810 events. 468/810 cut-off events. For 47856/47856 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3551 event pairs, 62 based on Foata normal form. 3/812 useless extension candidates. Maximal degree in co-relation 5162. Up to 389 conditions per place. [2024-06-27 19:54:24,242 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 58 changer transitions 0/157 dead transitions. [2024-06-27 19:54:24,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 157 transitions, 1703 flow [2024-06-27 19:54:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 19:54:24,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 19:54:24,243 INFO L175 Difference]: Start difference. First operand has 147 places, 123 transitions, 1059 flow. Second operand 10 states and 139 transitions. [2024-06-27 19:54:24,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 157 transitions, 1703 flow [2024-06-27 19:54:24,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 157 transitions, 1563 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:24,310 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 1100 flow [2024-06-27 19:54:24,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1100, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2024-06-27 19:54:24,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-27 19:54:24,310 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 1100 flow [2024-06-27 19:54:24,311 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 19:54:24,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:24,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:54:24,311 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 19:54:24,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -560615777, now seen corresponding path program 3 times [2024-06-27 19:54:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:24,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868038286] [2024-06-27 19:54:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868038286] [2024-06-27 19:54:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868038286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317125373] [2024-06-27 19:54:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:25,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:25,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 1100 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 19:54:25,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:25,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:25,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:25,587 INFO L124 PetriNetUnfolderBase]: 471/815 cut-off events. [2024-06-27 19:54:25,588 INFO L125 PetriNetUnfolderBase]: For 47057/47057 co-relation queries the response was YES. [2024-06-27 19:54:25,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 815 events. 471/815 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3561 event pairs, 101 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 5193. Up to 723 conditions per place. [2024-06-27 19:54:25,593 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 35 changer transitions 0/145 dead transitions. [2024-06-27 19:54:25,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 1450 flow [2024-06-27 19:54:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:54:25,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 19:54:25,594 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 1100 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:54:25,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 1450 flow [2024-06-27 19:54:25,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1350 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:25,691 INFO L231 Difference]: Finished difference. Result has 152 places, 129 transitions, 1105 flow [2024-06-27 19:54:25,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=152, PETRI_TRANSITIONS=129} [2024-06-27 19:54:25,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-27 19:54:25,691 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 129 transitions, 1105 flow [2024-06-27 19:54:25,691 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 19:54:25,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:25,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:54:25,692 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 19:54:25,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -560408232, now seen corresponding path program 5 times [2024-06-27 19:54:25,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:25,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880160915] [2024-06-27 19:54:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:26,388 INFO 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 19:54:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880160915] [2024-06-27 19:54:26,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880160915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:26,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:26,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662387236] [2024-06-27 19:54:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:26,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:26,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 129 transitions, 1105 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 19:54:26,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:26,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:26,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:26,792 INFO L124 PetriNetUnfolderBase]: 480/830 cut-off events. [2024-06-27 19:54:26,792 INFO L125 PetriNetUnfolderBase]: For 51456/51456 co-relation queries the response was YES. [2024-06-27 19:54:26,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5310 conditions, 830 events. 480/830 cut-off events. For 51456/51456 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3662 event pairs, 74 based on Foata normal form. 3/832 useless extension candidates. Maximal degree in co-relation 5236. Up to 402 conditions per place. [2024-06-27 19:54:26,796 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 95 selfloop transitions, 62 changer transitions 0/159 dead transitions. [2024-06-27 19:54:26,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 159 transitions, 1721 flow [2024-06-27 19:54:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 19:54:26,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 19:54:26,798 INFO L175 Difference]: Start difference. First operand has 152 places, 129 transitions, 1105 flow. Second operand 10 states and 136 transitions. [2024-06-27 19:54:26,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 159 transitions, 1721 flow [2024-06-27 19:54:26,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1632 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:26,883 INFO L231 Difference]: Finished difference. Result has 154 places, 131 transitions, 1171 flow [2024-06-27 19:54:26,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1171, PETRI_PLACES=154, PETRI_TRANSITIONS=131} [2024-06-27 19:54:26,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-27 19:54:26,883 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 131 transitions, 1171 flow [2024-06-27 19:54:26,884 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 19:54:26,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:26,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:26,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:54:26,884 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 19:54:26,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:26,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1418889926, now seen corresponding path program 6 times [2024-06-27 19:54:26,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:26,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366945826] [2024-06-27 19:54:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366945826] [2024-06-27 19:54:27,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366945826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:27,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:27,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552443277] [2024-06-27 19:54:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:27,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:27,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:27,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 131 transitions, 1171 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 19:54:27,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:27,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:27,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:27,958 INFO L124 PetriNetUnfolderBase]: 474/821 cut-off events. [2024-06-27 19:54:27,958 INFO L125 PetriNetUnfolderBase]: For 49570/49570 co-relation queries the response was YES. [2024-06-27 19:54:27,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5246 conditions, 821 events. 474/821 cut-off events. For 49570/49570 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3623 event pairs, 62 based on Foata normal form. 3/823 useless extension candidates. Maximal degree in co-relation 5171. Up to 398 conditions per place. [2024-06-27 19:54:27,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 59 changer transitions 0/160 dead transitions. [2024-06-27 19:54:27,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 160 transitions, 1667 flow [2024-06-27 19:54:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 19:54:27,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 19:54:27,967 INFO L175 Difference]: Start difference. First operand has 154 places, 131 transitions, 1171 flow. Second operand 10 states and 139 transitions. [2024-06-27 19:54:27,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 160 transitions, 1667 flow [2024-06-27 19:54:28,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 1534 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:28,064 INFO L231 Difference]: Finished difference. Result has 157 places, 131 transitions, 1161 flow [2024-06-27 19:54:28,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=157, PETRI_TRANSITIONS=131} [2024-06-27 19:54:28,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-27 19:54:28,064 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 131 transitions, 1161 flow [2024-06-27 19:54:28,065 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 19:54:28,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:28,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:54:28,065 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 19:54:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -359041935, now seen corresponding path program 1 times [2024-06-27 19:54:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416509903] [2024-06-27 19:54:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:29,088 INFO 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 19:54:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416509903] [2024-06-27 19:54:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416509903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:29,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:29,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636779955] [2024-06-27 19:54:29,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:29,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:29,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:29,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:29,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:29,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:29,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 131 transitions, 1161 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:29,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:29,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:29,403 INFO L124 PetriNetUnfolderBase]: 423/754 cut-off events. [2024-06-27 19:54:29,403 INFO L125 PetriNetUnfolderBase]: For 52938/52946 co-relation queries the response was YES. [2024-06-27 19:54:29,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 754 events. 423/754 cut-off events. For 52938/52946 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3400 event pairs, 66 based on Foata normal form. 6/747 useless extension candidates. Maximal degree in co-relation 4901. Up to 657 conditions per place. [2024-06-27 19:54:29,408 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 116 selfloop transitions, 20 changer transitions 0/150 dead transitions. [2024-06-27 19:54:29,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 150 transitions, 1495 flow [2024-06-27 19:54:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 19:54:29,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-27 19:54:29,409 INFO L175 Difference]: Start difference. First operand has 157 places, 131 transitions, 1161 flow. Second operand 9 states and 115 transitions. [2024-06-27 19:54:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 150 transitions, 1495 flow [2024-06-27 19:54:29,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 150 transitions, 1349 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:29,482 INFO L231 Difference]: Finished difference. Result has 157 places, 134 transitions, 1090 flow [2024-06-27 19:54:29,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1090, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2024-06-27 19:54:29,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-27 19:54:29,482 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 1090 flow [2024-06-27 19:54:29,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:29,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:29,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:54:29,483 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 19:54:29,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1306604148, now seen corresponding path program 7 times [2024-06-27 19:54:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429495941] [2024-06-27 19:54:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:30,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:30,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429495941] [2024-06-27 19:54:30,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429495941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:30,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:30,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480526512] [2024-06-27 19:54:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:30,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:30,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:30,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:30,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 1090 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 19:54:30,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:30,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:30,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:30,563 INFO L124 PetriNetUnfolderBase]: 517/892 cut-off events. [2024-06-27 19:54:30,563 INFO L125 PetriNetUnfolderBase]: For 62335/62335 co-relation queries the response was YES. [2024-06-27 19:54:30,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 892 events. 517/892 cut-off events. For 62335/62335 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4001 event pairs, 104 based on Foata normal form. 3/894 useless extension candidates. Maximal degree in co-relation 5792. Up to 438 conditions per place. [2024-06-27 19:54:30,572 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 63 changer transitions 0/168 dead transitions. [2024-06-27 19:54:30,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 168 transitions, 1914 flow [2024-06-27 19:54:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 19:54:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:54:30,573 INFO L175 Difference]: Start difference. First operand has 157 places, 134 transitions, 1090 flow. Second operand 10 states and 140 transitions. [2024-06-27 19:54:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 168 transitions, 1914 flow [2024-06-27 19:54:30,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 168 transitions, 1868 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:30,666 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 1259 flow [2024-06-27 19:54:30,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1259, PETRI_PLACES=161, PETRI_TRANSITIONS=140} [2024-06-27 19:54:30,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-27 19:54:30,666 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 1259 flow [2024-06-27 19:54:30,666 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 19:54:30,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:30,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:30,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:54:30,667 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 19:54:30,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1201089164, now seen corresponding path program 8 times [2024-06-27 19:54:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934236086] [2024-06-27 19:54:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:31,324 INFO 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 19:54:31,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934236086] [2024-06-27 19:54:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934236086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:31,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862988435] [2024-06-27 19:54:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:31,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:31,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:31,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 1259 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 19:54:31,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:31,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:31,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:31,679 INFO L124 PetriNetUnfolderBase]: 511/883 cut-off events. [2024-06-27 19:54:31,679 INFO L125 PetriNetUnfolderBase]: For 60368/60368 co-relation queries the response was YES. [2024-06-27 19:54:31,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5830 conditions, 883 events. 511/883 cut-off events. For 60368/60368 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3962 event pairs, 102 based on Foata normal form. 3/885 useless extension candidates. Maximal degree in co-relation 5751. Up to 434 conditions per place. [2024-06-27 19:54:31,685 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 94 selfloop transitions, 69 changer transitions 0/165 dead transitions. [2024-06-27 19:54:31,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 1879 flow [2024-06-27 19:54:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 19:54:31,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 19:54:31,687 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 1259 flow. Second operand 10 states and 134 transitions. [2024-06-27 19:54:31,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 1879 flow [2024-06-27 19:54:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 165 transitions, 1761 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:31,814 INFO L231 Difference]: Finished difference. Result has 166 places, 140 transitions, 1284 flow [2024-06-27 19:54:31,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1284, PETRI_PLACES=166, PETRI_TRANSITIONS=140} [2024-06-27 19:54:31,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-27 19:54:31,815 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 140 transitions, 1284 flow [2024-06-27 19:54:31,815 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 19:54:31,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:31,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:31,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:54:31,815 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 19:54:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2044048, now seen corresponding path program 9 times [2024-06-27 19:54:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451952503] [2024-06-27 19:54:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:32,534 INFO 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 19:54:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451952503] [2024-06-27 19:54:32,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451952503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:32,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:32,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540203637] [2024-06-27 19:54:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:32,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:32,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 140 transitions, 1284 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 19:54:32,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:32,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:32,882 INFO L124 PetriNetUnfolderBase]: 520/898 cut-off events. [2024-06-27 19:54:32,882 INFO L125 PetriNetUnfolderBase]: For 62702/62702 co-relation queries the response was YES. [2024-06-27 19:54:32,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5925 conditions, 898 events. 520/898 cut-off events. For 62702/62702 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4030 event pairs, 92 based on Foata normal form. 3/900 useless extension candidates. Maximal degree in co-relation 5845. Up to 442 conditions per place. [2024-06-27 19:54:32,887 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 68 changer transitions 0/169 dead transitions. [2024-06-27 19:54:32,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 169 transitions, 1956 flow [2024-06-27 19:54:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 19:54:32,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 19:54:32,888 INFO L175 Difference]: Start difference. First operand has 166 places, 140 transitions, 1284 flow. Second operand 10 states and 137 transitions. [2024-06-27 19:54:32,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 169 transitions, 1956 flow [2024-06-27 19:54:32,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 1802 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:33,001 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 1303 flow [2024-06-27 19:54:33,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1303, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2024-06-27 19:54:33,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-27 19:54:33,002 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 1303 flow [2024-06-27 19:54:33,002 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 19:54:33,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:33,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:54:33,002 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 19:54:33,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -366676367, now seen corresponding path program 4 times [2024-06-27 19:54:33,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:33,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984378297] [2024-06-27 19:54:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984378297] [2024-06-27 19:54:33,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984378297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:33,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495139342] [2024-06-27 19:54:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:33,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:33,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 1303 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 19:54:33,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:33,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:33,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:34,118 INFO L124 PetriNetUnfolderBase]: 523/903 cut-off events. [2024-06-27 19:54:34,118 INFO L125 PetriNetUnfolderBase]: For 61540/61540 co-relation queries the response was YES. [2024-06-27 19:54:34,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 903 events. 523/903 cut-off events. For 61540/61540 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4081 event pairs, 113 based on Foata normal form. 1/903 useless extension candidates. Maximal degree in co-relation 5921. Up to 811 conditions per place. [2024-06-27 19:54:34,124 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2024-06-27 19:54:34,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1673 flow [2024-06-27 19:54:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:54:34,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-27 19:54:34,125 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 1303 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:54:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1673 flow [2024-06-27 19:54:34,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 157 transitions, 1534 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:34,239 INFO L231 Difference]: Finished difference. Result has 170 places, 144 transitions, 1271 flow [2024-06-27 19:54:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1271, PETRI_PLACES=170, PETRI_TRANSITIONS=144} [2024-06-27 19:54:34,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 19:54:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 144 transitions, 1271 flow [2024-06-27 19:54:34,240 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 19:54:34,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:34,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:54:34,240 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 19:54:34,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash -366670632, now seen corresponding path program 10 times [2024-06-27 19:54:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538298565] [2024-06-27 19:54:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538298565] [2024-06-27 19:54:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538298565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714771980] [2024-06-27 19:54:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:35,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:35,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 144 transitions, 1271 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 19:54:35,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:35,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:35,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:35,300 INFO L124 PetriNetUnfolderBase]: 517/894 cut-off events. [2024-06-27 19:54:35,301 INFO L125 PetriNetUnfolderBase]: For 61546/61546 co-relation queries the response was YES. [2024-06-27 19:54:35,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 894 events. 517/894 cut-off events. For 61546/61546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4036 event pairs, 92 based on Foata normal form. 3/896 useless extension candidates. Maximal degree in co-relation 5626. Up to 443 conditions per place. [2024-06-27 19:54:35,307 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 66 changer transitions 0/170 dead transitions. [2024-06-27 19:54:35,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 170 transitions, 1803 flow [2024-06-27 19:54:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 19:54:35,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 19:54:35,308 INFO L175 Difference]: Start difference. First operand has 170 places, 144 transitions, 1271 flow. Second operand 10 states and 137 transitions. [2024-06-27 19:54:35,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 170 transitions, 1803 flow [2024-06-27 19:54:35,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 1698 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:35,407 INFO L231 Difference]: Finished difference. Result has 172 places, 144 transitions, 1303 flow [2024-06-27 19:54:35,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1303, PETRI_PLACES=172, PETRI_TRANSITIONS=144} [2024-06-27 19:54:35,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-27 19:54:35,408 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 144 transitions, 1303 flow [2024-06-27 19:54:35,408 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 19:54:35,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:35,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:35,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:54:35,408 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 19:54:35,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1559468947, now seen corresponding path program 2 times [2024-06-27 19:54:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:35,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937246024] [2024-06-27 19:54:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937246024] [2024-06-27 19:54:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937246024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:36,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:36,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815159774] [2024-06-27 19:54:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:36,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:36,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:36,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:36,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 144 transitions, 1303 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:36,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:36,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:36,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:36,808 INFO L124 PetriNetUnfolderBase]: 466/827 cut-off events. [2024-06-27 19:54:36,808 INFO L125 PetriNetUnfolderBase]: For 66140/66148 co-relation queries the response was YES. [2024-06-27 19:54:36,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5557 conditions, 827 events. 466/827 cut-off events. For 66140/66148 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3824 event pairs, 76 based on Foata normal form. 6/820 useless extension candidates. Maximal degree in co-relation 5474. Up to 758 conditions per place. [2024-06-27 19:54:36,814 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 130 selfloop transitions, 13 changer transitions 0/157 dead transitions. [2024-06-27 19:54:36,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 157 transitions, 1627 flow [2024-06-27 19:54:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:54:36,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-27 19:54:36,815 INFO L175 Difference]: Start difference. First operand has 172 places, 144 transitions, 1303 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:54:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 157 transitions, 1627 flow [2024-06-27 19:54:36,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1476 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:36,911 INFO L231 Difference]: Finished difference. Result has 171 places, 145 transitions, 1196 flow [2024-06-27 19:54:36,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1196, PETRI_PLACES=171, PETRI_TRANSITIONS=145} [2024-06-27 19:54:36,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-27 19:54:36,912 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 145 transitions, 1196 flow [2024-06-27 19:54:36,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:36,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:36,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:54:36,913 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 19:54:36,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1763669118, now seen corresponding path program 11 times [2024-06-27 19:54:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750759062] [2024-06-27 19:54:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750759062] [2024-06-27 19:54:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750759062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506950346] [2024-06-27 19:54:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:37,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:37,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:37,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 145 transitions, 1196 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 19:54:37,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:37,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:37,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:38,068 INFO L124 PetriNetUnfolderBase]: 545/941 cut-off events. [2024-06-27 19:54:38,068 INFO L125 PetriNetUnfolderBase]: For 71219/71219 co-relation queries the response was YES. [2024-06-27 19:54:38,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6094 conditions, 941 events. 545/941 cut-off events. For 71219/71219 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4303 event pairs, 88 based on Foata normal form. 3/943 useless extension candidates. Maximal degree in co-relation 6010. Up to 757 conditions per place. [2024-06-27 19:54:38,078 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 31 changer transitions 0/171 dead transitions. [2024-06-27 19:54:38,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 171 transitions, 1900 flow [2024-06-27 19:54:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:54:38,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:54:38,081 INFO L175 Difference]: Start difference. First operand has 171 places, 145 transitions, 1196 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:54:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 171 transitions, 1900 flow [2024-06-27 19:54:38,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 1866 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:38,205 INFO L231 Difference]: Finished difference. Result has 174 places, 149 transitions, 1289 flow [2024-06-27 19:54:38,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1289, PETRI_PLACES=174, PETRI_TRANSITIONS=149} [2024-06-27 19:54:38,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-27 19:54:38,206 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 149 transitions, 1289 flow [2024-06-27 19:54:38,206 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 19:54:38,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:38,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:38,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:54:38,206 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 19:54:38,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:38,206 INFO L85 PathProgramCache]: Analyzing trace with hash -136450335, now seen corresponding path program 3 times [2024-06-27 19:54:38,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:38,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575051203] [2024-06-27 19:54:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:39,272 INFO 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 19:54:39,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575051203] [2024-06-27 19:54:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575051203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:39,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712907333] [2024-06-27 19:54:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:39,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:39,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 149 transitions, 1289 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:39,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:39,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:39,632 INFO L124 PetriNetUnfolderBase]: 494/878 cut-off events. [2024-06-27 19:54:39,632 INFO L125 PetriNetUnfolderBase]: For 76013/76017 co-relation queries the response was YES. [2024-06-27 19:54:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 878 events. 494/878 cut-off events. For 76013/76017 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4191 event pairs, 86 based on Foata normal form. 6/875 useless extension candidates. Maximal degree in co-relation 5859. Up to 810 conditions per place. [2024-06-27 19:54:39,639 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 136 selfloop transitions, 13 changer transitions 0/163 dead transitions. [2024-06-27 19:54:39,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 163 transitions, 1641 flow [2024-06-27 19:54:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:54:39,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-27 19:54:39,640 INFO L175 Difference]: Start difference. First operand has 174 places, 149 transitions, 1289 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:54:39,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 163 transitions, 1641 flow [2024-06-27 19:54:39,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 163 transitions, 1518 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:39,748 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 1233 flow [2024-06-27 19:54:39,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1233, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2024-06-27 19:54:39,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-27 19:54:39,749 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 1233 flow [2024-06-27 19:54:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:39,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:39,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:54:39,749 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 19:54:39,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash 377042545, now seen corresponding path program 5 times [2024-06-27 19:54:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432282506] [2024-06-27 19:54:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:39,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432282506] [2024-06-27 19:54:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432282506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:40,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:40,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703210812] [2024-06-27 19:54:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:40,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:40,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 1233 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 19:54:40,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:40,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:40,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:40,948 INFO L124 PetriNetUnfolderBase]: 547/946 cut-off events. [2024-06-27 19:54:40,949 INFO L125 PetriNetUnfolderBase]: For 70060/70060 co-relation queries the response was YES. [2024-06-27 19:54:40,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 946 events. 547/946 cut-off events. For 70060/70060 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4359 event pairs, 109 based on Foata normal form. 1/946 useless extension candidates. Maximal degree in co-relation 6059. Up to 920 conditions per place. [2024-06-27 19:54:40,956 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-27 19:54:40,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 164 transitions, 1613 flow [2024-06-27 19:54:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:54:40,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:54:40,957 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 1233 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:54:40,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 164 transitions, 1613 flow [2024-06-27 19:54:41,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 164 transitions, 1575 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:41,076 INFO L231 Difference]: Finished difference. Result has 180 places, 154 transitions, 1270 flow [2024-06-27 19:54:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1270, PETRI_PLACES=180, PETRI_TRANSITIONS=154} [2024-06-27 19:54:41,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-27 19:54:41,077 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 154 transitions, 1270 flow [2024-06-27 19:54:41,077 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 19:54:41,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:41,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:41,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:54:41,078 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 19:54:41,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1194391543, now seen corresponding path program 1 times [2024-06-27 19:54:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:41,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968316638] [2024-06-27 19:54:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968316638] [2024-06-27 19:54:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968316638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:41,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:41,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102573361] [2024-06-27 19:54:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:42,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:42,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 154 transitions, 1270 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 19:54:42,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:42,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:42,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:42,441 INFO L124 PetriNetUnfolderBase]: 554/958 cut-off events. [2024-06-27 19:54:42,442 INFO L125 PetriNetUnfolderBase]: For 72272/72272 co-relation queries the response was YES. [2024-06-27 19:54:42,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 958 events. 554/958 cut-off events. For 72272/72272 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4417 event pairs, 98 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 6088. Up to 919 conditions per place. [2024-06-27 19:54:42,448 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 16 changer transitions 0/175 dead transitions. [2024-06-27 19:54:42,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 175 transitions, 1696 flow [2024-06-27 19:54:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:54:42,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:54:42,449 INFO L175 Difference]: Start difference. First operand has 180 places, 154 transitions, 1270 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:54:42,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 175 transitions, 1696 flow [2024-06-27 19:54:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 175 transitions, 1637 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:42,577 INFO L231 Difference]: Finished difference. Result has 185 places, 162 transitions, 1325 flow [2024-06-27 19:54:42,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1325, PETRI_PLACES=185, PETRI_TRANSITIONS=162} [2024-06-27 19:54:42,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-27 19:54:42,578 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 162 transitions, 1325 flow [2024-06-27 19:54:42,578 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 19:54:42,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:42,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:54:42,579 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 19:54:42,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 642103945, now seen corresponding path program 4 times [2024-06-27 19:54:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60534517] [2024-06-27 19:54:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60534517] [2024-06-27 19:54:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60534517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:43,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694713205] [2024-06-27 19:54:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:43,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:43,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 162 transitions, 1325 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:43,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:43,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:43,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:44,106 INFO L124 PetriNetUnfolderBase]: 502/892 cut-off events. [2024-06-27 19:54:44,106 INFO L125 PetriNetUnfolderBase]: For 78827/78833 co-relation queries the response was YES. [2024-06-27 19:54:44,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 892 events. 502/892 cut-off events. For 78827/78833 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4271 event pairs, 80 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 5965. Up to 819 conditions per place. [2024-06-27 19:54:44,111 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 15 changer transitions 0/175 dead transitions. [2024-06-27 19:54:44,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 175 transitions, 1694 flow [2024-06-27 19:54:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:54:44,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:54:44,112 INFO L175 Difference]: Start difference. First operand has 185 places, 162 transitions, 1325 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:54:44,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 175 transitions, 1694 flow [2024-06-27 19:54:44,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 175 transitions, 1652 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:44,243 INFO L231 Difference]: Finished difference. Result has 191 places, 165 transitions, 1351 flow [2024-06-27 19:54:44,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1351, PETRI_PLACES=191, PETRI_TRANSITIONS=165} [2024-06-27 19:54:44,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-27 19:54:44,244 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 165 transitions, 1351 flow [2024-06-27 19:54:44,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:44,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:44,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:44,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:54:44,244 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 19:54:44,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1508357900, now seen corresponding path program 12 times [2024-06-27 19:54:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194572408] [2024-06-27 19:54:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:44,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:44,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194572408] [2024-06-27 19:54:44,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194572408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:44,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:44,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508947108] [2024-06-27 19:54:44,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:44,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:44,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:44,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:44,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 165 transitions, 1351 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 19:54:44,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:44,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:44,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:45,316 INFO L124 PetriNetUnfolderBase]: 567/981 cut-off events. [2024-06-27 19:54:45,316 INFO L125 PetriNetUnfolderBase]: For 78992/78992 co-relation queries the response was YES. [2024-06-27 19:54:45,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 981 events. 567/981 cut-off events. For 78992/78992 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4581 event pairs, 103 based on Foata normal form. 3/983 useless extension candidates. Maximal degree in co-relation 6399. Up to 919 conditions per place. [2024-06-27 19:54:45,323 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 18 changer transitions 0/183 dead transitions. [2024-06-27 19:54:45,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1801 flow [2024-06-27 19:54:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:54:45,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:54:45,324 INFO L175 Difference]: Start difference. First operand has 191 places, 165 transitions, 1351 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:54:45,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1801 flow [2024-06-27 19:54:45,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 183 transitions, 1761 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:45,470 INFO L231 Difference]: Finished difference. Result has 194 places, 167 transitions, 1384 flow [2024-06-27 19:54:45,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1384, PETRI_PLACES=194, PETRI_TRANSITIONS=167} [2024-06-27 19:54:45,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-27 19:54:45,470 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 167 transitions, 1384 flow [2024-06-27 19:54:45,470 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 19:54:45,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:45,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:54:45,471 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 19:54:45,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1980344954, now seen corresponding path program 13 times [2024-06-27 19:54:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:45,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869558110] [2024-06-27 19:54:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:46,121 INFO 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 19:54:46,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:46,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869558110] [2024-06-27 19:54:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869558110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:46,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:46,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:46,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644010193] [2024-06-27 19:54:46,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:46,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:46,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:46,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 167 transitions, 1384 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 19:54:46,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:46,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:46,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:46,501 INFO L124 PetriNetUnfolderBase]: 576/996 cut-off events. [2024-06-27 19:54:46,501 INFO L125 PetriNetUnfolderBase]: For 81458/81458 co-relation queries the response was YES. [2024-06-27 19:54:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6616 conditions, 996 events. 576/996 cut-off events. For 81458/81458 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4676 event pairs, 79 based on Foata normal form. 3/998 useless extension candidates. Maximal degree in co-relation 6521. Up to 798 conditions per place. [2024-06-27 19:54:46,509 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 42 changer transitions 0/189 dead transitions. [2024-06-27 19:54:46,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 189 transitions, 1998 flow [2024-06-27 19:54:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:54:46,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:54:46,510 INFO L175 Difference]: Start difference. First operand has 194 places, 167 transitions, 1384 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:54:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 189 transitions, 1998 flow [2024-06-27 19:54:46,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 189 transitions, 1947 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:46,674 INFO L231 Difference]: Finished difference. Result has 196 places, 169 transitions, 1448 flow [2024-06-27 19:54:46,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1448, PETRI_PLACES=196, PETRI_TRANSITIONS=169} [2024-06-27 19:54:46,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 19:54:46,675 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 169 transitions, 1448 flow [2024-06-27 19:54:46,675 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 19:54:46,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:46,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:46,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:54:46,675 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 19:54:46,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash -28797538, now seen corresponding path program 14 times [2024-06-27 19:54:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:46,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417576103] [2024-06-27 19:54:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:47,352 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 19:54:47,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417576103] [2024-06-27 19:54:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417576103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:47,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44830010] [2024-06-27 19:54:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:47,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:47,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:47,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:47,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 169 transitions, 1448 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 19:54:47,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:47,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:47,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:47,791 INFO L124 PetriNetUnfolderBase]: 570/987 cut-off events. [2024-06-27 19:54:47,791 INFO L125 PetriNetUnfolderBase]: For 77078/77078 co-relation queries the response was YES. [2024-06-27 19:54:47,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 987 events. 570/987 cut-off events. For 77078/77078 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4625 event pairs, 79 based on Foata normal form. 3/989 useless extension candidates. Maximal degree in co-relation 6386. Up to 794 conditions per place. [2024-06-27 19:54:47,797 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 39 changer transitions 0/189 dead transitions. [2024-06-27 19:54:47,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 2038 flow [2024-06-27 19:54:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 19:54:47,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 19:54:47,798 INFO L175 Difference]: Start difference. First operand has 196 places, 169 transitions, 1448 flow. Second operand 10 states and 123 transitions. [2024-06-27 19:54:47,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 2038 flow [2024-06-27 19:54:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 189 transitions, 1889 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:47,939 INFO L231 Difference]: Finished difference. Result has 198 places, 169 transitions, 1382 flow [2024-06-27 19:54:47,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1382, PETRI_PLACES=198, PETRI_TRANSITIONS=169} [2024-06-27 19:54:47,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-27 19:54:47,940 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 169 transitions, 1382 flow [2024-06-27 19:54:47,940 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 19:54:47,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:47,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:54:47,940 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 19:54:47,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1756519278, now seen corresponding path program 15 times [2024-06-27 19:54:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888675892] [2024-06-27 19:54:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:48,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888675892] [2024-06-27 19:54:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888675892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89986046] [2024-06-27 19:54:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:48,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:48,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:48,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 169 transitions, 1382 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 19:54:48,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:48,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:48,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:49,100 INFO L124 PetriNetUnfolderBase]: 564/978 cut-off events. [2024-06-27 19:54:49,100 INFO L125 PetriNetUnfolderBase]: For 72241/72241 co-relation queries the response was YES. [2024-06-27 19:54:49,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6172 conditions, 978 events. 564/978 cut-off events. For 72241/72241 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4575 event pairs, 99 based on Foata normal form. 3/980 useless extension candidates. Maximal degree in co-relation 6075. Up to 790 conditions per place. [2024-06-27 19:54:49,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 35 changer transitions 0/188 dead transitions. [2024-06-27 19:54:49,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 188 transitions, 1834 flow [2024-06-27 19:54:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:54:49,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:54:49,113 INFO L175 Difference]: Start difference. First operand has 198 places, 169 transitions, 1382 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:54:49,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 188 transitions, 1834 flow [2024-06-27 19:54:49,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 188 transitions, 1751 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:49,254 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 1374 flow [2024-06-27 19:54:49,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1374, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2024-06-27 19:54:49,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-27 19:54:49,254 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 1374 flow [2024-06-27 19:54:49,254 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 19:54:49,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:49,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:49,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:54:49,255 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 19:54:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1987979231, now seen corresponding path program 5 times [2024-06-27 19:54:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826218503] [2024-06-27 19:54:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:50,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826218503] [2024-06-27 19:54:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826218503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957052679] [2024-06-27 19:54:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:50,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:50,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:50,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 1374 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:50,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:50,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:50,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:50,867 INFO L124 PetriNetUnfolderBase]: 505/895 cut-off events. [2024-06-27 19:54:50,868 INFO L125 PetriNetUnfolderBase]: For 72989/73000 co-relation queries the response was YES. [2024-06-27 19:54:50,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 895 events. 505/895 cut-off events. For 72989/73000 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4303 event pairs, 78 based on Foata normal form. 7/889 useless extension candidates. Maximal degree in co-relation 5591. Up to 810 conditions per place. [2024-06-27 19:54:50,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 21 changer transitions 0/182 dead transitions. [2024-06-27 19:54:50,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 182 transitions, 1754 flow [2024-06-27 19:54:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 19:54:50,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:54:50,875 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 1374 flow. Second operand 9 states and 111 transitions. [2024-06-27 19:54:50,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 182 transitions, 1754 flow [2024-06-27 19:54:51,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 182 transitions, 1631 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:54:51,009 INFO L231 Difference]: Finished difference. Result has 199 places, 171 transitions, 1320 flow [2024-06-27 19:54:51,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=199, PETRI_TRANSITIONS=171} [2024-06-27 19:54:51,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 19:54:51,009 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 171 transitions, 1320 flow [2024-06-27 19:54:51,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:54:51,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:51,010 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 19:54:51,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:54:51,010 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 19:54:51,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash 757972849, now seen corresponding path program 1 times [2024-06-27 19:54:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989686929] [2024-06-27 19:54:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:52,063 INFO 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 19:54:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989686929] [2024-06-27 19:54:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989686929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:52,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:52,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:54:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018060783] [2024-06-27 19:54:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:54:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:54:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:54:52,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:52,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 171 transitions, 1320 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 19:54:52,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:52,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:52,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:52,544 INFO L124 PetriNetUnfolderBase]: 572/994 cut-off events. [2024-06-27 19:54:52,544 INFO L125 PetriNetUnfolderBase]: For 74491/74491 co-relation queries the response was YES. [2024-06-27 19:54:52,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 994 events. 572/994 cut-off events. For 74491/74491 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4697 event pairs, 84 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6200. Up to 898 conditions per place. [2024-06-27 19:54:52,552 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 21 changer transitions 0/202 dead transitions. [2024-06-27 19:54:52,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 1988 flow [2024-06-27 19:54:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:54:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:54:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:54:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:54:52,553 INFO L175 Difference]: Start difference. First operand has 199 places, 171 transitions, 1320 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:54:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 1988 flow [2024-06-27 19:54:52,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 1905 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:52,724 INFO L231 Difference]: Finished difference. Result has 204 places, 173 transitions, 1333 flow [2024-06-27 19:54:52,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1333, PETRI_PLACES=204, PETRI_TRANSITIONS=173} [2024-06-27 19:54:52,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-27 19:54:52,725 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 173 transitions, 1333 flow [2024-06-27 19:54:52,725 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 19:54:52,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:52,725 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 19:54:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:54:52,725 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 19:54:52,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818199, now seen corresponding path program 1 times [2024-06-27 19:54:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:52,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797470705] [2024-06-27 19:54:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:53,602 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 19:54:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797470705] [2024-06-27 19:54:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797470705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:54:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575346190] [2024-06-27 19:54:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:53,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:54:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:54:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:54:53,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:53,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 173 transitions, 1333 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 19:54:53,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:53,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:53,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:54,148 INFO L124 PetriNetUnfolderBase]: 583/1012 cut-off events. [2024-06-27 19:54:54,148 INFO L125 PetriNetUnfolderBase]: For 76413/76413 co-relation queries the response was YES. [2024-06-27 19:54:54,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 1012 events. 583/1012 cut-off events. For 76413/76413 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4795 event pairs, 100 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 6367. Up to 938 conditions per place. [2024-06-27 19:54:54,155 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-06-27 19:54:54,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 2038 flow [2024-06-27 19:54:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:54:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:54:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 19:54:54,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-27 19:54:54,156 INFO L175 Difference]: Start difference. First operand has 204 places, 173 transitions, 1333 flow. Second operand 12 states and 143 transitions. [2024-06-27 19:54:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 2038 flow [2024-06-27 19:54:54,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 208 transitions, 1954 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:54,336 INFO L231 Difference]: Finished difference. Result has 208 places, 181 transitions, 1394 flow [2024-06-27 19:54:54,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1394, PETRI_PLACES=208, PETRI_TRANSITIONS=181} [2024-06-27 19:54:54,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-27 19:54:54,336 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 181 transitions, 1394 flow [2024-06-27 19:54:54,337 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 19:54:54,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:54,337 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 19:54:54,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:54:54,337 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 19:54:54,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1393446673, now seen corresponding path program 2 times [2024-06-27 19:54:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036467087] [2024-06-27 19:54:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:55,368 INFO 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 19:54:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036467087] [2024-06-27 19:54:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036467087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:55,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:54:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786114306] [2024-06-27 19:54:55,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:54:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:54:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:54:55,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:55,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 181 transitions, 1394 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 19:54:55,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:55,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:55,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:55,938 INFO L124 PetriNetUnfolderBase]: 580/1007 cut-off events. [2024-06-27 19:54:55,939 INFO L125 PetriNetUnfolderBase]: For 76723/76723 co-relation queries the response was YES. [2024-06-27 19:54:55,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 1007 events. 580/1007 cut-off events. For 76723/76723 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4764 event pairs, 99 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 6226. Up to 937 conditions per place. [2024-06-27 19:54:55,947 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 22 changer transitions 0/208 dead transitions. [2024-06-27 19:54:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 208 transitions, 1882 flow [2024-06-27 19:54:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:54:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:54:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 19:54:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 19:54:55,948 INFO L175 Difference]: Start difference. First operand has 208 places, 181 transitions, 1394 flow. Second operand 12 states and 139 transitions. [2024-06-27 19:54:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 208 transitions, 1882 flow [2024-06-27 19:54:56,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 208 transitions, 1813 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:56,128 INFO L231 Difference]: Finished difference. Result has 214 places, 181 transitions, 1374 flow [2024-06-27 19:54:56,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1374, PETRI_PLACES=214, PETRI_TRANSITIONS=181} [2024-06-27 19:54:56,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-27 19:54:56,129 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 181 transitions, 1374 flow [2024-06-27 19:54:56,129 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 19:54:56,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:56,130 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 19:54:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:54:56,130 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 19:54:56,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1317021689, now seen corresponding path program 2 times [2024-06-27 19:54:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108652335] [2024-06-27 19:54:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:57,290 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 19:54:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108652335] [2024-06-27 19:54:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108652335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:57,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:57,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:54:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295263965] [2024-06-27 19:54:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:54:57,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:54:57,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:54:57,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:57,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 181 transitions, 1374 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 19:54:57,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:57,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:57,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:57,852 INFO L124 PetriNetUnfolderBase]: 584/1014 cut-off events. [2024-06-27 19:54:57,852 INFO L125 PetriNetUnfolderBase]: For 78663/78663 co-relation queries the response was YES. [2024-06-27 19:54:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1014 events. 584/1014 cut-off events. For 78663/78663 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4813 event pairs, 99 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 6206. Up to 942 conditions per place. [2024-06-27 19:54:57,859 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 182 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2024-06-27 19:54:57,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 208 transitions, 1892 flow [2024-06-27 19:54:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:54:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:54:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:54:57,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:54:57,860 INFO L175 Difference]: Start difference. First operand has 214 places, 181 transitions, 1374 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:54:57,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 208 transitions, 1892 flow [2024-06-27 19:54:58,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 1838 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:54:58,034 INFO L231 Difference]: Finished difference. Result has 215 places, 183 transitions, 1415 flow [2024-06-27 19:54:58,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1415, PETRI_PLACES=215, PETRI_TRANSITIONS=183} [2024-06-27 19:54:58,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:54:58,035 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 183 transitions, 1415 flow [2024-06-27 19:54:58,035 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 19:54:58,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:58,035 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 19:54:58,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:54:58,035 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 19:54:58,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1201552889, now seen corresponding path program 3 times [2024-06-27 19:54:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:58,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468793414] [2024-06-27 19:54:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:58,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:58,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:58,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468793414] [2024-06-27 19:54:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468793414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:54:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003666811] [2024-06-27 19:54:58,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:58,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:54:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:54:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:54:59,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:54:59,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 183 transitions, 1415 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 19:54:59,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:59,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:54:59,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:59,408 INFO L124 PetriNetUnfolderBase]: 593/1029 cut-off events. [2024-06-27 19:54:59,408 INFO L125 PetriNetUnfolderBase]: For 81024/81024 co-relation queries the response was YES. [2024-06-27 19:54:59,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 1029 events. 593/1029 cut-off events. For 81024/81024 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4938 event pairs, 53 based on Foata normal form. 3/1031 useless extension candidates. Maximal degree in co-relation 6370. Up to 544 conditions per place. [2024-06-27 19:54:59,416 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 122 selfloop transitions, 91 changer transitions 0/215 dead transitions. [2024-06-27 19:54:59,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 215 transitions, 2015 flow [2024-06-27 19:54:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:54:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:54:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 19:54:59,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 19:54:59,417 INFO L175 Difference]: Start difference. First operand has 215 places, 183 transitions, 1415 flow. Second operand 11 states and 147 transitions. [2024-06-27 19:54:59,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 215 transitions, 2015 flow [2024-06-27 19:54:59,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 215 transitions, 1934 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 19:54:59,606 INFO L231 Difference]: Finished difference. Result has 215 places, 186 transitions, 1578 flow [2024-06-27 19:54:59,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1578, PETRI_PLACES=215, PETRI_TRANSITIONS=186} [2024-06-27 19:54:59,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:54:59,606 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 186 transitions, 1578 flow [2024-06-27 19:54:59,606 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 19:54:59,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:59,607 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 19:54:59,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:54:59,607 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 19:54:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1201730519, now seen corresponding path program 4 times [2024-06-27 19:54:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:59,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144113305] [2024-06-27 19:54:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144113305] [2024-06-27 19:55:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144113305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:00,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:00,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064937637] [2024-06-27 19:55:00,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:00,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:00,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:00,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 186 transitions, 1578 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 19:55:00,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:00,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:00,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:01,058 INFO L124 PetriNetUnfolderBase]: 602/1044 cut-off events. [2024-06-27 19:55:01,058 INFO L125 PetriNetUnfolderBase]: For 83742/83742 co-relation queries the response was YES. [2024-06-27 19:55:01,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 1044 events. 602/1044 cut-off events. For 83742/83742 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5021 event pairs, 53 based on Foata normal form. 3/1046 useless extension candidates. Maximal degree in co-relation 6802. Up to 543 conditions per place. [2024-06-27 19:55:01,066 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 125 selfloop transitions, 95 changer transitions 0/222 dead transitions. [2024-06-27 19:55:01,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 222 transitions, 2230 flow [2024-06-27 19:55:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:55:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:55:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-27 19:55:01,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:55:01,067 INFO L175 Difference]: Start difference. First operand has 215 places, 186 transitions, 1578 flow. Second operand 12 states and 162 transitions. [2024-06-27 19:55:01,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 222 transitions, 2230 flow [2024-06-27 19:55:01,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 222 transitions, 2008 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:01,263 INFO L231 Difference]: Finished difference. Result has 218 places, 189 transitions, 1615 flow [2024-06-27 19:55:01,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1615, PETRI_PLACES=218, PETRI_TRANSITIONS=189} [2024-06-27 19:55:01,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-27 19:55:01,264 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 189 transitions, 1615 flow [2024-06-27 19:55:01,264 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 19:55:01,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:01,264 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 19:55:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:55:01,264 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 19:55:01,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1201730643, now seen corresponding path program 3 times [2024-06-27 19:55:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:01,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269214488] [2024-06-27 19:55:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269214488] [2024-06-27 19:55:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269214488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698964072] [2024-06-27 19:55:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:02,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:02,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 189 transitions, 1615 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 19:55:02,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:02,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:02,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:02,684 INFO L124 PetriNetUnfolderBase]: 606/1052 cut-off events. [2024-06-27 19:55:02,684 INFO L125 PetriNetUnfolderBase]: For 83358/83358 co-relation queries the response was YES. [2024-06-27 19:55:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1052 events. 606/1052 cut-off events. For 83358/83358 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5059 event pairs, 108 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 6939. Up to 954 conditions per place. [2024-06-27 19:55:02,692 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 169 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-06-27 19:55:02,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 210 transitions, 2109 flow [2024-06-27 19:55:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:55:02,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:55:02,694 INFO L175 Difference]: Start difference. First operand has 218 places, 189 transitions, 1615 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:55:02,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 210 transitions, 2109 flow [2024-06-27 19:55:02,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 210 transitions, 1874 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:02,913 INFO L231 Difference]: Finished difference. Result has 219 places, 190 transitions, 1488 flow [2024-06-27 19:55:02,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1488, PETRI_PLACES=219, PETRI_TRANSITIONS=190} [2024-06-27 19:55:02,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 19:55:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 190 transitions, 1488 flow [2024-06-27 19:55:02,913 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 19:55:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:02,913 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 19:55:02,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:55:02,914 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 19:55:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1029657645, now seen corresponding path program 5 times [2024-06-27 19:55:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781729439] [2024-06-27 19:55:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:03,845 INFO 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 19:55:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781729439] [2024-06-27 19:55:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781729439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438287458] [2024-06-27 19:55:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:03,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:03,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:03,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 190 transitions, 1488 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 19:55:03,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:03,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:03,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:04,366 INFO L124 PetriNetUnfolderBase]: 615/1067 cut-off events. [2024-06-27 19:55:04,366 INFO L125 PetriNetUnfolderBase]: For 88303/88303 co-relation queries the response was YES. [2024-06-27 19:55:04,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 1067 events. 615/1067 cut-off events. For 88303/88303 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5156 event pairs, 81 based on Foata normal form. 3/1069 useless extension candidates. Maximal degree in co-relation 6815. Up to 582 conditions per place. [2024-06-27 19:55:04,374 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 131 selfloop transitions, 86 changer transitions 0/219 dead transitions. [2024-06-27 19:55:04,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 219 transitions, 2114 flow [2024-06-27 19:55:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 19:55:04,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 19:55:04,375 INFO L175 Difference]: Start difference. First operand has 219 places, 190 transitions, 1488 flow. Second operand 11 states and 145 transitions. [2024-06-27 19:55:04,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 219 transitions, 2114 flow [2024-06-27 19:55:04,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 219 transitions, 2016 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:04,567 INFO L231 Difference]: Finished difference. Result has 221 places, 193 transitions, 1636 flow [2024-06-27 19:55:04,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=221, PETRI_TRANSITIONS=193} [2024-06-27 19:55:04,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 19:55:04,568 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 193 transitions, 1636 flow [2024-06-27 19:55:04,568 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 19:55:04,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:04,569 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 19:55:04,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:55:04,569 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 19:55:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1222624149, now seen corresponding path program 6 times [2024-06-27 19:55:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293724751] [2024-06-27 19:55:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:05,459 INFO 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 19:55:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293724751] [2024-06-27 19:55:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293724751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931613179] [2024-06-27 19:55:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:05,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:05,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 193 transitions, 1636 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 19:55:05,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:05,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:05,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:05,974 INFO L124 PetriNetUnfolderBase]: 624/1082 cut-off events. [2024-06-27 19:55:05,975 INFO L125 PetriNetUnfolderBase]: For 91349/91349 co-relation queries the response was YES. [2024-06-27 19:55:05,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 1082 events. 624/1082 cut-off events. For 91349/91349 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5265 event pairs, 85 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 7211. Up to 597 conditions per place. [2024-06-27 19:55:05,983 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 138 selfloop transitions, 84 changer transitions 0/224 dead transitions. [2024-06-27 19:55:05,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 2308 flow [2024-06-27 19:55:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 19:55:05,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 19:55:05,984 INFO L175 Difference]: Start difference. First operand has 221 places, 193 transitions, 1636 flow. Second operand 11 states and 148 transitions. [2024-06-27 19:55:05,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 2308 flow [2024-06-27 19:55:06,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 224 transitions, 2084 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:06,175 INFO L231 Difference]: Finished difference. Result has 223 places, 196 transitions, 1660 flow [2024-06-27 19:55:06,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1660, PETRI_PLACES=223, PETRI_TRANSITIONS=196} [2024-06-27 19:55:06,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-27 19:55:06,176 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 196 transitions, 1660 flow [2024-06-27 19:55:06,176 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 19:55:06,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:06,176 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 19:55:06,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:55:06,176 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 19:55:06,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1029411381, now seen corresponding path program 1 times [2024-06-27 19:55:06,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:06,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256838513] [2024-06-27 19:55:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:06,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:07,242 INFO 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 19:55:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256838513] [2024-06-27 19:55:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256838513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:07,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:07,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:07,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7674929] [2024-06-27 19:55:07,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:07,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:07,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:07,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 196 transitions, 1660 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 19:55:07,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:07,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:07,666 INFO L124 PetriNetUnfolderBase]: 628/1090 cut-off events. [2024-06-27 19:55:07,667 INFO L125 PetriNetUnfolderBase]: For 90545/90545 co-relation queries the response was YES. [2024-06-27 19:55:07,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 1090 events. 628/1090 cut-off events. For 90545/90545 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5314 event pairs, 68 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 7288. Up to 927 conditions per place. [2024-06-27 19:55:07,674 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 45 changer transitions 0/219 dead transitions. [2024-06-27 19:55:07,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 219 transitions, 2207 flow [2024-06-27 19:55:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:55:07,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:55:07,675 INFO L175 Difference]: Start difference. First operand has 223 places, 196 transitions, 1660 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:55:07,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 219 transitions, 2207 flow [2024-06-27 19:55:07,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 219 transitions, 1979 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:07,873 INFO L231 Difference]: Finished difference. Result has 225 places, 199 transitions, 1572 flow [2024-06-27 19:55:07,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=225, PETRI_TRANSITIONS=199} [2024-06-27 19:55:07,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 19:55:07,874 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 199 transitions, 1572 flow [2024-06-27 19:55:07,874 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 19:55:07,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:07,874 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 19:55:07,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:55:07,874 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 19:55:07,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1677748737, now seen corresponding path program 7 times [2024-06-27 19:55:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255380635] [2024-06-27 19:55:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:07,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:08,797 INFO 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 19:55:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255380635] [2024-06-27 19:55:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255380635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367763980] [2024-06-27 19:55:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:08,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:08,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:08,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:08,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 199 transitions, 1572 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 19:55:08,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:08,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:09,293 INFO L124 PetriNetUnfolderBase]: 637/1105 cut-off events. [2024-06-27 19:55:09,293 INFO L125 PetriNetUnfolderBase]: For 96476/96476 co-relation queries the response was YES. [2024-06-27 19:55:09,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1105 events. 637/1105 cut-off events. For 96476/96476 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5425 event pairs, 77 based on Foata normal form. 3/1107 useless extension candidates. Maximal degree in co-relation 7321. Up to 620 conditions per place. [2024-06-27 19:55:09,303 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 144 selfloop transitions, 84 changer transitions 0/230 dead transitions. [2024-06-27 19:55:09,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 230 transitions, 2284 flow [2024-06-27 19:55:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 19:55:09,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-27 19:55:09,304 INFO L175 Difference]: Start difference. First operand has 225 places, 199 transitions, 1572 flow. Second operand 11 states and 149 transitions. [2024-06-27 19:55:09,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 230 transitions, 2284 flow [2024-06-27 19:55:09,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 2172 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:09,552 INFO L231 Difference]: Finished difference. Result has 229 places, 202 transitions, 1716 flow [2024-06-27 19:55:09,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=229, PETRI_TRANSITIONS=202} [2024-06-27 19:55:09,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-27 19:55:09,552 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 202 transitions, 1716 flow [2024-06-27 19:55:09,552 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 19:55:09,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:09,552 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 19:55:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:55:09,553 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 19:55:09,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1036091385, now seen corresponding path program 8 times [2024-06-27 19:55:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084110649] [2024-06-27 19:55:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:10,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084110649] [2024-06-27 19:55:10,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084110649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:10,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:10,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367703843] [2024-06-27 19:55:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:10,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 202 transitions, 1716 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 19:55:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:11,140 INFO L124 PetriNetUnfolderBase]: 640/1110 cut-off events. [2024-06-27 19:55:11,140 INFO L125 PetriNetUnfolderBase]: For 93121/93121 co-relation queries the response was YES. [2024-06-27 19:55:11,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 1110 events. 640/1110 cut-off events. For 93121/93121 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5453 event pairs, 85 based on Foata normal form. 1/1110 useless extension candidates. Maximal degree in co-relation 7600. Up to 597 conditions per place. [2024-06-27 19:55:11,150 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 137 selfloop transitions, 95 changer transitions 0/234 dead transitions. [2024-06-27 19:55:11,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 234 transitions, 2428 flow [2024-06-27 19:55:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:55:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:55:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 19:55:11,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:55:11,152 INFO L175 Difference]: Start difference. First operand has 229 places, 202 transitions, 1716 flow. Second operand 12 states and 160 transitions. [2024-06-27 19:55:11,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 234 transitions, 2428 flow [2024-06-27 19:55:11,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 234 transitions, 2194 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:11,393 INFO L231 Difference]: Finished difference. Result has 232 places, 204 transitions, 1737 flow [2024-06-27 19:55:11,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1737, PETRI_PLACES=232, PETRI_TRANSITIONS=204} [2024-06-27 19:55:11,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-27 19:55:11,393 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 204 transitions, 1737 flow [2024-06-27 19:55:11,393 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 19:55:11,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:11,394 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 19:55:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:55:11,394 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 19:55:11,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1036091509, now seen corresponding path program 4 times [2024-06-27 19:55:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:11,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520551674] [2024-06-27 19:55:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520551674] [2024-06-27 19:55:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520551674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:12,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216753480] [2024-06-27 19:55:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:12,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:12,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 204 transitions, 1737 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 19:55:12,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:12,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:12,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:12,789 INFO L124 PetriNetUnfolderBase]: 644/1118 cut-off events. [2024-06-27 19:55:12,789 INFO L125 PetriNetUnfolderBase]: For 98985/98985 co-relation queries the response was YES. [2024-06-27 19:55:12,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1118 events. 644/1118 cut-off events. For 98985/98985 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5484 event pairs, 110 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 7708. Up to 1020 conditions per place. [2024-06-27 19:55:12,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 37 changer transitions 0/222 dead transitions. [2024-06-27 19:55:12,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 222 transitions, 2247 flow [2024-06-27 19:55:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:55:12,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:55:12,800 INFO L175 Difference]: Start difference. First operand has 232 places, 204 transitions, 1737 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:55:12,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 222 transitions, 2247 flow [2024-06-27 19:55:13,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 222 transitions, 2020 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:13,023 INFO L231 Difference]: Finished difference. Result has 233 places, 205 transitions, 1616 flow [2024-06-27 19:55:13,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1616, PETRI_PLACES=233, PETRI_TRANSITIONS=205} [2024-06-27 19:55:13,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-27 19:55:13,023 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 205 transitions, 1616 flow [2024-06-27 19:55:13,024 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 19:55:13,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:13,024 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 19:55:13,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:55:13,024 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 19:55:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash 501205619, now seen corresponding path program 2 times [2024-06-27 19:55:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944384972] [2024-06-27 19:55:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944384972] [2024-06-27 19:55:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944384972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139194892] [2024-06-27 19:55:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:14,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:14,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 205 transitions, 1616 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 19:55:14,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:14,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:14,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:14,649 INFO L124 PetriNetUnfolderBase]: 648/1126 cut-off events. [2024-06-27 19:55:14,649 INFO L125 PetriNetUnfolderBase]: For 100928/100928 co-relation queries the response was YES. [2024-06-27 19:55:14,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7659 conditions, 1126 events. 648/1126 cut-off events. For 100928/100928 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5537 event pairs, 74 based on Foata normal form. 2/1127 useless extension candidates. Maximal degree in co-relation 7544. Up to 963 conditions per place. [2024-06-27 19:55:14,660 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 40 changer transitions 0/227 dead transitions. [2024-06-27 19:55:14,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 227 transitions, 2211 flow [2024-06-27 19:55:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:55:14,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:55:14,662 INFO L175 Difference]: Start difference. First operand has 233 places, 205 transitions, 1616 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:55:14,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 227 transitions, 2211 flow [2024-06-27 19:55:14,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 227 transitions, 2115 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:14,956 INFO L231 Difference]: Finished difference. Result has 235 places, 208 transitions, 1656 flow [2024-06-27 19:55:14,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1656, PETRI_PLACES=235, PETRI_TRANSITIONS=208} [2024-06-27 19:55:14,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-27 19:55:14,957 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 208 transitions, 1656 flow [2024-06-27 19:55:14,957 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 19:55:14,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:14,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:55:14,957 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 19:55:14,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1754592571, now seen corresponding path program 3 times [2024-06-27 19:55:14,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:14,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954948498] [2024-06-27 19:55:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:14,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954948498] [2024-06-27 19:55:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954948498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:16,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800312049] [2024-06-27 19:55:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:16,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:16,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:16,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 208 transitions, 1656 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 19:55:16,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:16,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:16,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:16,456 INFO L124 PetriNetUnfolderBase]: 658/1144 cut-off events. [2024-06-27 19:55:16,456 INFO L125 PetriNetUnfolderBase]: For 103798/103798 co-relation queries the response was YES. [2024-06-27 19:55:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 1144 events. 658/1144 cut-off events. For 103798/103798 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5675 event pairs, 77 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 7718. Up to 994 conditions per place. [2024-06-27 19:55:16,466 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 186 selfloop transitions, 42 changer transitions 0/230 dead transitions. [2024-06-27 19:55:16,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 230 transitions, 2253 flow [2024-06-27 19:55:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:55:16,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 19:55:16,467 INFO L175 Difference]: Start difference. First operand has 235 places, 208 transitions, 1656 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:55:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 230 transitions, 2253 flow [2024-06-27 19:55:16,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 230 transitions, 2137 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:16,714 INFO L231 Difference]: Finished difference. Result has 239 places, 213 transitions, 1711 flow [2024-06-27 19:55:16,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1711, PETRI_PLACES=239, PETRI_TRANSITIONS=213} [2024-06-27 19:55:16,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-27 19:55:16,714 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 213 transitions, 1711 flow [2024-06-27 19:55:16,715 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 19:55:16,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:16,715 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 19:55:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:55:16,715 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 19:55:16,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1524369397, now seen corresponding path program 9 times [2024-06-27 19:55:16,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098400513] [2024-06-27 19:55:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098400513] [2024-06-27 19:55:17,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098400513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:17,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118651222] [2024-06-27 19:55:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:17,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:17,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 213 transitions, 1711 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 19:55:17,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:17,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:17,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:18,124 INFO L124 PetriNetUnfolderBase]: 667/1159 cut-off events. [2024-06-27 19:55:18,124 INFO L125 PetriNetUnfolderBase]: For 111165/111165 co-relation queries the response was YES. [2024-06-27 19:55:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1159 events. 667/1159 cut-off events. For 111165/111165 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5751 event pairs, 85 based on Foata normal form. 3/1161 useless extension candidates. Maximal degree in co-relation 7959. Up to 666 conditions per place. [2024-06-27 19:55:18,134 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 160 selfloop transitions, 80 changer transitions 0/242 dead transitions. [2024-06-27 19:55:18,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 242 transitions, 2521 flow [2024-06-27 19:55:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 19:55:18,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 19:55:18,135 INFO L175 Difference]: Start difference. First operand has 239 places, 213 transitions, 1711 flow. Second operand 11 states and 148 transitions. [2024-06-27 19:55:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 242 transitions, 2521 flow [2024-06-27 19:55:18,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 242 transitions, 2384 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:18,395 INFO L231 Difference]: Finished difference. Result has 245 places, 216 transitions, 1872 flow [2024-06-27 19:55:18,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1872, PETRI_PLACES=245, PETRI_TRANSITIONS=216} [2024-06-27 19:55:18,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-27 19:55:18,396 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 216 transitions, 1872 flow [2024-06-27 19:55:18,396 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 19:55:18,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:18,396 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 19:55:18,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:55:18,397 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 19:55:18,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1518113287, now seen corresponding path program 10 times [2024-06-27 19:55:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:18,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398224804] [2024-06-27 19:55:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:19,243 INFO 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 19:55:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:19,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398224804] [2024-06-27 19:55:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398224804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593624015] [2024-06-27 19:55:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:19,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:19,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 216 transitions, 1872 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 19:55:19,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:19,705 INFO L124 PetriNetUnfolderBase]: 676/1174 cut-off events. [2024-06-27 19:55:19,705 INFO L125 PetriNetUnfolderBase]: For 112927/112927 co-relation queries the response was YES. [2024-06-27 19:55:19,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1174 events. 676/1174 cut-off events. For 112927/112927 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5869 event pairs, 83 based on Foata normal form. 3/1176 useless extension candidates. Maximal degree in co-relation 8167. Up to 681 conditions per place. [2024-06-27 19:55:19,715 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 159 selfloop transitions, 83 changer transitions 0/244 dead transitions. [2024-06-27 19:55:19,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 244 transitions, 2636 flow [2024-06-27 19:55:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 19:55:19,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 19:55:19,716 INFO L175 Difference]: Start difference. First operand has 245 places, 216 transitions, 1872 flow. Second operand 11 states and 147 transitions. [2024-06-27 19:55:19,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 244 transitions, 2636 flow [2024-06-27 19:55:19,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 244 transitions, 2402 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:19,966 INFO L231 Difference]: Finished difference. Result has 247 places, 219 transitions, 1906 flow [2024-06-27 19:55:19,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1906, PETRI_PLACES=247, PETRI_TRANSITIONS=219} [2024-06-27 19:55:19,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-27 19:55:19,967 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 219 transitions, 1906 flow [2024-06-27 19:55:19,967 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 19:55:19,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:19,967 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 19:55:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:55:19,967 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 19:55:19,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1746014437, now seen corresponding path program 11 times [2024-06-27 19:55:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98114169] [2024-06-27 19:55:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:20,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98114169] [2024-06-27 19:55:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98114169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294059366] [2024-06-27 19:55:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:20,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:20,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 219 transitions, 1906 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 19:55:20,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:20,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:21,360 INFO L124 PetriNetUnfolderBase]: 685/1189 cut-off events. [2024-06-27 19:55:21,361 INFO L125 PetriNetUnfolderBase]: For 116241/116241 co-relation queries the response was YES. [2024-06-27 19:55:21,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8485 conditions, 1189 events. 685/1189 cut-off events. For 116241/116241 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5951 event pairs, 87 based on Foata normal form. 3/1191 useless extension candidates. Maximal degree in co-relation 8364. Up to 696 conditions per place. [2024-06-27 19:55:21,372 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 156 selfloop transitions, 87 changer transitions 0/245 dead transitions. [2024-06-27 19:55:21,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 245 transitions, 2656 flow [2024-06-27 19:55:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 19:55:21,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:55:21,373 INFO L175 Difference]: Start difference. First operand has 247 places, 219 transitions, 1906 flow. Second operand 11 states and 143 transitions. [2024-06-27 19:55:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 245 transitions, 2656 flow [2024-06-27 19:55:21,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 245 transitions, 2410 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:21,660 INFO L231 Difference]: Finished difference. Result has 249 places, 222 transitions, 1942 flow [2024-06-27 19:55:21,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=249, PETRI_TRANSITIONS=222} [2024-06-27 19:55:21,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-27 19:55:21,660 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 222 transitions, 1942 flow [2024-06-27 19:55:21,660 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 19:55:21,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:21,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:55:21,661 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 19:55:21,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 494530265, now seen corresponding path program 12 times [2024-06-27 19:55:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163633949] [2024-06-27 19:55:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:22,513 INFO 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 19:55:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163633949] [2024-06-27 19:55:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163633949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209753915] [2024-06-27 19:55:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:22,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:22,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 222 transitions, 1942 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 19:55:22,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:22,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:22,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:22,993 INFO L124 PetriNetUnfolderBase]: 694/1204 cut-off events. [2024-06-27 19:55:22,994 INFO L125 PetriNetUnfolderBase]: For 119815/119815 co-relation queries the response was YES. [2024-06-27 19:55:23,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8679 conditions, 1204 events. 694/1204 cut-off events. For 119815/119815 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6064 event pairs, 79 based on Foata normal form. 3/1206 useless extension candidates. Maximal degree in co-relation 8557. Up to 711 conditions per place. [2024-06-27 19:55:23,004 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 163 selfloop transitions, 85 changer transitions 0/250 dead transitions. [2024-06-27 19:55:23,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 250 transitions, 2750 flow [2024-06-27 19:55:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:55:23,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:55:23,006 INFO L175 Difference]: Start difference. First operand has 249 places, 222 transitions, 1942 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:55:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 250 transitions, 2750 flow [2024-06-27 19:55:23,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 2490 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:23,282 INFO L231 Difference]: Finished difference. Result has 251 places, 225 transitions, 1966 flow [2024-06-27 19:55:23,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1966, PETRI_PLACES=251, PETRI_TRANSITIONS=225} [2024-06-27 19:55:23,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 19:55:23,282 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 225 transitions, 1966 flow [2024-06-27 19:55:23,282 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 19:55:23,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:23,283 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 19:55:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:55:23,283 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 19:55:23,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935533, now seen corresponding path program 5 times [2024-06-27 19:55:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958709887] [2024-06-27 19:55:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:24,250 INFO 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 19:55:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958709887] [2024-06-27 19:55:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958709887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322411670] [2024-06-27 19:55:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:24,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:24,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:24,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:24,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 225 transitions, 1966 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 19:55:24,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:24,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:24,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:24,709 INFO L124 PetriNetUnfolderBase]: 698/1212 cut-off events. [2024-06-27 19:55:24,709 INFO L125 PetriNetUnfolderBase]: For 118402/118402 co-relation queries the response was YES. [2024-06-27 19:55:24,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8735 conditions, 1212 events. 698/1212 cut-off events. For 118402/118402 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6054 event pairs, 112 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8612. Up to 1114 conditions per place. [2024-06-27 19:55:24,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2024-06-27 19:55:24,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 240 transitions, 2504 flow [2024-06-27 19:55:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:55:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 19:55:24,718 INFO L175 Difference]: Start difference. First operand has 251 places, 225 transitions, 1966 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:55:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 240 transitions, 2504 flow [2024-06-27 19:55:24,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 240 transitions, 2242 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:24,995 INFO L231 Difference]: Finished difference. Result has 253 places, 226 transitions, 1810 flow [2024-06-27 19:55:24,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1810, PETRI_PLACES=253, PETRI_TRANSITIONS=226} [2024-06-27 19:55:24,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-27 19:55:24,995 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 226 transitions, 1810 flow [2024-06-27 19:55:24,995 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 19:55:24,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:24,995 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 19:55:24,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:55:24,996 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 19:55:24,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935657, now seen corresponding path program 13 times [2024-06-27 19:55:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:24,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020790865] [2024-06-27 19:55:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:24,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:25,884 INFO 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 19:55:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020790865] [2024-06-27 19:55:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020790865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:25,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456606410] [2024-06-27 19:55:25,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:25,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:26,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:26,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 226 transitions, 1810 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 19:55:26,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:26,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:26,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:26,469 INFO L124 PetriNetUnfolderBase]: 701/1217 cut-off events. [2024-06-27 19:55:26,469 INFO L125 PetriNetUnfolderBase]: For 115730/115730 co-relation queries the response was YES. [2024-06-27 19:55:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8512 conditions, 1217 events. 701/1217 cut-off events. For 115730/115730 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6134 event pairs, 81 based on Foata normal form. 1/1217 useless extension candidates. Maximal degree in co-relation 8388. Up to 685 conditions per place. [2024-06-27 19:55:26,480 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 155 selfloop transitions, 98 changer transitions 0/255 dead transitions. [2024-06-27 19:55:26,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 255 transitions, 2612 flow [2024-06-27 19:55:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:55:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:55:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 19:55:26,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-27 19:55:26,482 INFO L175 Difference]: Start difference. First operand has 253 places, 226 transitions, 1810 flow. Second operand 12 states and 158 transitions. [2024-06-27 19:55:26,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 255 transitions, 2612 flow [2024-06-27 19:55:26,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 255 transitions, 2516 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:26,781 INFO L231 Difference]: Finished difference. Result has 256 places, 228 transitions, 1993 flow [2024-06-27 19:55:26,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1993, PETRI_PLACES=256, PETRI_TRANSITIONS=228} [2024-06-27 19:55:26,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-27 19:55:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 228 transitions, 1993 flow [2024-06-27 19:55:26,782 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 19:55:26,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:26,782 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 19:55:26,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:55:26,782 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 19:55:26,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1754602801, now seen corresponding path program 4 times [2024-06-27 19:55:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:26,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815007111] [2024-06-27 19:55:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815007111] [2024-06-27 19:55:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815007111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:27,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:27,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180608464] [2024-06-27 19:55:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:27,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:27,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 228 transitions, 1993 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 19:55:27,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:27,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:27,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:28,279 INFO L124 PetriNetUnfolderBase]: 712/1238 cut-off events. [2024-06-27 19:55:28,279 INFO L125 PetriNetUnfolderBase]: For 131628/131628 co-relation queries the response was YES. [2024-06-27 19:55:28,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9091 conditions, 1238 events. 712/1238 cut-off events. For 131628/131628 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6272 event pairs, 88 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 8966. Up to 1053 conditions per place. [2024-06-27 19:55:28,290 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 46 changer transitions 0/248 dead transitions. [2024-06-27 19:55:28,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 248 transitions, 2777 flow [2024-06-27 19:55:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:55:28,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:55:28,292 INFO L175 Difference]: Start difference. First operand has 256 places, 228 transitions, 1993 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:55:28,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 248 transitions, 2777 flow [2024-06-27 19:55:28,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 248 transitions, 2526 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:28,608 INFO L231 Difference]: Finished difference. Result has 256 places, 230 transitions, 1872 flow [2024-06-27 19:55:28,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1872, PETRI_PLACES=256, PETRI_TRANSITIONS=230} [2024-06-27 19:55:28,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-27 19:55:28,608 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 230 transitions, 1872 flow [2024-06-27 19:55:28,608 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 19:55:28,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:28,609 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 19:55:28,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:55:28,609 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 19:55:28,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1746260701, now seen corresponding path program 5 times [2024-06-27 19:55:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851849597] [2024-06-27 19:55:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:29,721 INFO 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 19:55:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851849597] [2024-06-27 19:55:29,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851849597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:29,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:29,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601233222] [2024-06-27 19:55:29,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:29,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:29,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:29,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:29,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 230 transitions, 1872 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 19:55:29,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:29,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:29,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:30,248 INFO L124 PetriNetUnfolderBase]: 709/1233 cut-off events. [2024-06-27 19:55:30,249 INFO L125 PetriNetUnfolderBase]: For 125301/125301 co-relation queries the response was YES. [2024-06-27 19:55:30,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8702 conditions, 1233 events. 709/1233 cut-off events. For 125301/125301 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6244 event pairs, 80 based on Foata normal form. 2/1234 useless extension candidates. Maximal degree in co-relation 8576. Up to 1066 conditions per place. [2024-06-27 19:55:30,259 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 44 changer transitions 0/248 dead transitions. [2024-06-27 19:55:30,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 248 transitions, 2446 flow [2024-06-27 19:55:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:55:30,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:55:30,260 INFO L175 Difference]: Start difference. First operand has 256 places, 230 transitions, 1872 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:55:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 248 transitions, 2446 flow [2024-06-27 19:55:30,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 248 transitions, 2370 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:30,575 INFO L231 Difference]: Finished difference. Result has 260 places, 230 transitions, 1888 flow [2024-06-27 19:55:30,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1888, PETRI_PLACES=260, PETRI_TRANSITIONS=230} [2024-06-27 19:55:30,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 19:55:30,575 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 230 transitions, 1888 flow [2024-06-27 19:55:30,576 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 19:55:30,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:30,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:30,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:55:30,576 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 19:55:30,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash -51890175, now seen corresponding path program 14 times [2024-06-27 19:55:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:30,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003428114] [2024-06-27 19:55:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:30,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:31,466 INFO 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 19:55:31,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003428114] [2024-06-27 19:55:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003428114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:31,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:31,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025738456] [2024-06-27 19:55:31,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:31,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:31,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:31,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 230 transitions, 1888 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 19:55:31,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:31,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:31,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:31,958 INFO L124 PetriNetUnfolderBase]: 718/1248 cut-off events. [2024-06-27 19:55:31,958 INFO L125 PetriNetUnfolderBase]: For 133481/133481 co-relation queries the response was YES. [2024-06-27 19:55:31,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8991 conditions, 1248 events. 718/1248 cut-off events. For 133481/133481 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6341 event pairs, 105 based on Foata normal form. 3/1250 useless extension candidates. Maximal degree in co-relation 8863. Up to 1049 conditions per place. [2024-06-27 19:55:31,970 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 213 selfloop transitions, 39 changer transitions 0/254 dead transitions. [2024-06-27 19:55:31,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 254 transitions, 2720 flow [2024-06-27 19:55:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:55:31,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:55:31,971 INFO L175 Difference]: Start difference. First operand has 260 places, 230 transitions, 1888 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:55:31,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 254 transitions, 2720 flow [2024-06-27 19:55:32,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 254 transitions, 2593 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 19:55:32,316 INFO L231 Difference]: Finished difference. Result has 259 places, 233 transitions, 1963 flow [2024-06-27 19:55:32,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1963, PETRI_PLACES=259, PETRI_TRANSITIONS=233} [2024-06-27 19:55:32,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-27 19:55:32,317 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 233 transitions, 1963 flow [2024-06-27 19:55:32,317 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 19:55:32,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:32,317 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 19:55:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:55:32,317 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 19:55:32,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 916729531, now seen corresponding path program 6 times [2024-06-27 19:55:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:32,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179040305] [2024-06-27 19:55:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:32,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:33,512 INFO 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 19:55:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179040305] [2024-06-27 19:55:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179040305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323630815] [2024-06-27 19:55:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:33,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:33,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:33,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 233 transitions, 1963 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 19:55:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:33,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:34,121 INFO L124 PetriNetUnfolderBase]: 728/1266 cut-off events. [2024-06-27 19:55:34,121 INFO L125 PetriNetUnfolderBase]: For 132703/132703 co-relation queries the response was YES. [2024-06-27 19:55:34,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9171 conditions, 1266 events. 728/1266 cut-off events. For 132703/132703 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6478 event pairs, 99 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 9045. Up to 1166 conditions per place. [2024-06-27 19:55:34,132 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 29 changer transitions 0/253 dead transitions. [2024-06-27 19:55:34,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 253 transitions, 2649 flow [2024-06-27 19:55:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:55:34,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:55:34,133 INFO L175 Difference]: Start difference. First operand has 259 places, 233 transitions, 1963 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:55:34,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 253 transitions, 2649 flow [2024-06-27 19:55:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2465 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:34,535 INFO L231 Difference]: Finished difference. Result has 261 places, 237 transitions, 1924 flow [2024-06-27 19:55:34,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=261, PETRI_TRANSITIONS=237} [2024-06-27 19:55:34,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 19:55:34,536 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 237 transitions, 1924 flow [2024-06-27 19:55:34,536 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 19:55:34,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:34,536 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 19:55:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:55:34,536 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 19:55:34,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1497804685, now seen corresponding path program 7 times [2024-06-27 19:55:34,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:34,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349244191] [2024-06-27 19:55:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:35,646 INFO 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 19:55:35,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:35,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349244191] [2024-06-27 19:55:35,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349244191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:35,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:35,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809128008] [2024-06-27 19:55:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:35,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:35,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 237 transitions, 1924 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 19:55:35,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:35,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:35,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:36,131 INFO L124 PetriNetUnfolderBase]: 732/1274 cut-off events. [2024-06-27 19:55:36,131 INFO L125 PetriNetUnfolderBase]: For 134907/134907 co-relation queries the response was YES. [2024-06-27 19:55:36,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9116 conditions, 1274 events. 732/1274 cut-off events. For 134907/134907 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6502 event pairs, 105 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 8988. Up to 1191 conditions per place. [2024-06-27 19:55:36,143 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 225 selfloop transitions, 28 changer transitions 0/255 dead transitions. [2024-06-27 19:55:36,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 255 transitions, 2581 flow [2024-06-27 19:55:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:55:36,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:55:36,144 INFO L175 Difference]: Start difference. First operand has 261 places, 237 transitions, 1924 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:55:36,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 255 transitions, 2581 flow [2024-06-27 19:55:36,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 255 transitions, 2473 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:36,522 INFO L231 Difference]: Finished difference. Result has 265 places, 241 transitions, 1966 flow [2024-06-27 19:55:36,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1966, PETRI_PLACES=265, PETRI_TRANSITIONS=241} [2024-06-27 19:55:36,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 19:55:36,523 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 241 transitions, 1966 flow [2024-06-27 19:55:36,523 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 19:55:36,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:36,523 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 19:55:36,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:55:36,523 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 19:55:36,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -892722687, now seen corresponding path program 15 times [2024-06-27 19:55:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468469523] [2024-06-27 19:55:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:37,493 INFO 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 19:55:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468469523] [2024-06-27 19:55:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468469523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:37,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631435145] [2024-06-27 19:55:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:37,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:37,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:37,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 1966 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 19:55:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:38,047 INFO L124 PetriNetUnfolderBase]: 741/1289 cut-off events. [2024-06-27 19:55:38,047 INFO L125 PetriNetUnfolderBase]: For 144362/144362 co-relation queries the response was YES. [2024-06-27 19:55:38,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9381 conditions, 1289 events. 741/1289 cut-off events. For 144362/144362 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6615 event pairs, 99 based on Foata normal form. 3/1291 useless extension candidates. Maximal degree in co-relation 9251. Up to 1082 conditions per place. [2024-06-27 19:55:38,057 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 215 selfloop transitions, 47 changer transitions 0/264 dead transitions. [2024-06-27 19:55:38,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 2818 flow [2024-06-27 19:55:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:55:38,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 19:55:38,058 INFO L175 Difference]: Start difference. First operand has 265 places, 241 transitions, 1966 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:55:38,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 2818 flow [2024-06-27 19:55:38,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 264 transitions, 2721 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:38,493 INFO L231 Difference]: Finished difference. Result has 271 places, 244 transitions, 2105 flow [2024-06-27 19:55:38,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2105, PETRI_PLACES=271, PETRI_TRANSITIONS=244} [2024-06-27 19:55:38,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-27 19:55:38,494 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 244 transitions, 2105 flow [2024-06-27 19:55:38,494 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 19:55:38,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:38,494 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 19:55:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:55:38,494 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 19:55:38,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1391066585, now seen corresponding path program 8 times [2024-06-27 19:55:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993378908] [2024-06-27 19:55:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993378908] [2024-06-27 19:55:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993378908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:39,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:39,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:39,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258189474] [2024-06-27 19:55:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:39,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:39,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:39,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 244 transitions, 2105 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 19:55:39,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:39,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:39,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:40,393 INFO L124 PetriNetUnfolderBase]: 752/1310 cut-off events. [2024-06-27 19:55:40,393 INFO L125 PetriNetUnfolderBase]: For 151892/151892 co-relation queries the response was YES. [2024-06-27 19:55:40,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 1310 events. 752/1310 cut-off events. For 151892/151892 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6760 event pairs, 108 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 9665. Up to 1198 conditions per place. [2024-06-27 19:55:40,403 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 31 changer transitions 0/261 dead transitions. [2024-06-27 19:55:40,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 261 transitions, 2935 flow [2024-06-27 19:55:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:55:40,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 19:55:40,405 INFO L175 Difference]: Start difference. First operand has 271 places, 244 transitions, 2105 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:55:40,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 261 transitions, 2935 flow [2024-06-27 19:55:40,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 261 transitions, 2731 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:40,845 INFO L231 Difference]: Finished difference. Result has 272 places, 246 transitions, 2013 flow [2024-06-27 19:55:40,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2013, PETRI_PLACES=272, PETRI_TRANSITIONS=246} [2024-06-27 19:55:40,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-27 19:55:40,846 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 246 transitions, 2013 flow [2024-06-27 19:55:40,846 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 19:55:40,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:40,846 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 19:55:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:55:40,846 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 19:55:40,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1628866019, now seen corresponding path program 9 times [2024-06-27 19:55:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651667053] [2024-06-27 19:55:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:41,847 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 19:55:41,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:41,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651667053] [2024-06-27 19:55:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651667053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:41,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:41,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232791741] [2024-06-27 19:55:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:41,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:41,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:41,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 246 transitions, 2013 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 19:55:41,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:41,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:42,417 INFO L124 PetriNetUnfolderBase]: 756/1318 cut-off events. [2024-06-27 19:55:42,417 INFO L125 PetriNetUnfolderBase]: For 153115/153115 co-relation queries the response was YES. [2024-06-27 19:55:42,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9655 conditions, 1318 events. 756/1318 cut-off events. For 153115/153115 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6818 event pairs, 114 based on Foata normal form. 2/1319 useless extension candidates. Maximal degree in co-relation 9523. Up to 1270 conditions per place. [2024-06-27 19:55:42,430 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 236 selfloop transitions, 21 changer transitions 0/259 dead transitions. [2024-06-27 19:55:42,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 259 transitions, 2581 flow [2024-06-27 19:55:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:55:42,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:55:42,431 INFO L175 Difference]: Start difference. First operand has 272 places, 246 transitions, 2013 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:55:42,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 259 transitions, 2581 flow [2024-06-27 19:55:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 259 transitions, 2520 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:42,837 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2025 flow [2024-06-27 19:55:42,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2025, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-27 19:55:42,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-27 19:55:42,838 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2025 flow [2024-06-27 19:55:42,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:42,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:42,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:55:42,839 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 19:55:42,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1261152421, now seen corresponding path program 16 times [2024-06-27 19:55:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25044225] [2024-06-27 19:55:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:43,730 INFO 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 19:55:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25044225] [2024-06-27 19:55:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25044225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:43,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351843424] [2024-06-27 19:55:43,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:43,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:43,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:43,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:43,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:43,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2025 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 19:55:43,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:43,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:43,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:44,248 INFO L124 PetriNetUnfolderBase]: 765/1333 cut-off events. [2024-06-27 19:55:44,248 INFO L125 PetriNetUnfolderBase]: For 162609/162609 co-relation queries the response was YES. [2024-06-27 19:55:44,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9902 conditions, 1333 events. 765/1333 cut-off events. For 162609/162609 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6925 event pairs, 92 based on Foata normal form. 3/1335 useless extension candidates. Maximal degree in co-relation 9768. Up to 1126 conditions per place. [2024-06-27 19:55:44,261 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 218 selfloop transitions, 50 changer transitions 0/270 dead transitions. [2024-06-27 19:55:44,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 270 transitions, 2893 flow [2024-06-27 19:55:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:55:44,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:55:44,262 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2025 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:55:44,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 270 transitions, 2893 flow [2024-06-27 19:55:44,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 270 transitions, 2832 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:44,724 INFO L231 Difference]: Finished difference. Result has 279 places, 250 transitions, 2202 flow [2024-06-27 19:55:44,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2202, PETRI_PLACES=279, PETRI_TRANSITIONS=250} [2024-06-27 19:55:44,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-27 19:55:44,725 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 250 transitions, 2202 flow [2024-06-27 19:55:44,725 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 19:55:44,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:44,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:44,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:55:44,726 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 19:55:44,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1160833181, now seen corresponding path program 17 times [2024-06-27 19:55:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:44,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624822037] [2024-06-27 19:55:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:44,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624822037] [2024-06-27 19:55:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624822037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:45,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115986215] [2024-06-27 19:55:45,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:45,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:45,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 250 transitions, 2202 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 19:55:45,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:45,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:45,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:46,078 INFO L124 PetriNetUnfolderBase]: 774/1348 cut-off events. [2024-06-27 19:55:46,078 INFO L125 PetriNetUnfolderBase]: For 168756/168756 co-relation queries the response was YES. [2024-06-27 19:55:46,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 1348 events. 774/1348 cut-off events. For 168756/168756 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7034 event pairs, 108 based on Foata normal form. 3/1350 useless extension candidates. Maximal degree in co-relation 10207. Up to 1141 conditions per place. [2024-06-27 19:55:46,093 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 228 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-06-27 19:55:46,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 273 transitions, 3090 flow [2024-06-27 19:55:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:55:46,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 19:55:46,096 INFO L175 Difference]: Start difference. First operand has 279 places, 250 transitions, 2202 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:55:46,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 273 transitions, 3090 flow [2024-06-27 19:55:46,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 273 transitions, 2874 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:46,627 INFO L231 Difference]: Finished difference. Result has 281 places, 253 transitions, 2216 flow [2024-06-27 19:55:46,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2216, PETRI_PLACES=281, PETRI_TRANSITIONS=253} [2024-06-27 19:55:46,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 19:55:46,666 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 253 transitions, 2216 flow [2024-06-27 19:55:46,666 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 19:55:46,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:46,667 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 19:55:46,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:55:46,667 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 19:55:46,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1161079445, now seen corresponding path program 10 times [2024-06-27 19:55:46,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:46,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973331931] [2024-06-27 19:55:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:47,703 INFO 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 19:55:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:47,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973331931] [2024-06-27 19:55:47,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973331931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:47,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:47,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529666828] [2024-06-27 19:55:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:47,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:47,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:47,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:47,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 253 transitions, 2216 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 19:55:47,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:47,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:47,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:48,220 INFO L124 PetriNetUnfolderBase]: 771/1343 cut-off events. [2024-06-27 19:55:48,220 INFO L125 PetriNetUnfolderBase]: For 155528/155528 co-relation queries the response was YES. [2024-06-27 19:55:48,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10010 conditions, 1343 events. 771/1343 cut-off events. For 155528/155528 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6981 event pairs, 105 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 9874. Up to 1243 conditions per place. [2024-06-27 19:55:48,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 34 changer transitions 0/267 dead transitions. [2024-06-27 19:55:48,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 267 transitions, 2824 flow [2024-06-27 19:55:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:55:48,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:55:48,234 INFO L175 Difference]: Start difference. First operand has 281 places, 253 transitions, 2216 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:55:48,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 267 transitions, 2824 flow [2024-06-27 19:55:48,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 267 transitions, 2606 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:48,790 INFO L231 Difference]: Finished difference. Result has 282 places, 253 transitions, 2070 flow [2024-06-27 19:55:48,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2070, PETRI_PLACES=282, PETRI_TRANSITIONS=253} [2024-06-27 19:55:48,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 19:55:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 253 transitions, 2070 flow [2024-06-27 19:55:48,791 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 19:55:48,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:48,792 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 19:55:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:55:48,792 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:48,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1154399317, now seen corresponding path program 6 times [2024-06-27 19:55:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388316952] [2024-06-27 19:55:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:49,813 INFO 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 19:55:49,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:49,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388316952] [2024-06-27 19:55:49,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388316952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:49,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:49,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563879883] [2024-06-27 19:55:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:49,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:49,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:49,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:49,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:49,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 253 transitions, 2070 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 19:55:49,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:49,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:49,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:50,290 INFO L124 PetriNetUnfolderBase]: 768/1338 cut-off events. [2024-06-27 19:55:50,290 INFO L125 PetriNetUnfolderBase]: For 145678/145678 co-relation queries the response was YES. [2024-06-27 19:55:50,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9539 conditions, 1338 events. 768/1338 cut-off events. For 145678/145678 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6948 event pairs, 120 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 9402. Up to 1306 conditions per place. [2024-06-27 19:55:50,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-06-27 19:55:50,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 264 transitions, 2618 flow [2024-06-27 19:55:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:55:50,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:55:50,304 INFO L175 Difference]: Start difference. First operand has 282 places, 253 transitions, 2070 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:55:50,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 264 transitions, 2618 flow [2024-06-27 19:55:50,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 264 transitions, 2526 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:50,807 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 2018 flow [2024-06-27 19:55:50,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2018, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2024-06-27 19:55:50,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-27 19:55:50,807 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 2018 flow [2024-06-27 19:55:50,807 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 19:55:50,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:50,808 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 19:55:50,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:55:50,808 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:50,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:50,808 INFO L85 PathProgramCache]: Analyzing trace with hash 485792611, now seen corresponding path program 11 times [2024-06-27 19:55:50,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:50,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696546063] [2024-06-27 19:55:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:50,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:51,897 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 19:55:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696546063] [2024-06-27 19:55:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696546063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:51,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726954847] [2024-06-27 19:55:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:51,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:51,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:51,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:51,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 2018 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 19:55:51,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:51,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:51,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:52,476 INFO L124 PetriNetUnfolderBase]: 778/1356 cut-off events. [2024-06-27 19:55:52,477 INFO L125 PetriNetUnfolderBase]: For 148278/148278 co-relation queries the response was YES. [2024-06-27 19:55:52,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9609 conditions, 1356 events. 778/1356 cut-off events. For 148278/148278 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7069 event pairs, 108 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 9472. Up to 1293 conditions per place. [2024-06-27 19:55:52,487 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 245 selfloop transitions, 23 changer transitions 0/270 dead transitions. [2024-06-27 19:55:52,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 270 transitions, 2676 flow [2024-06-27 19:55:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:55:52,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:55:52,488 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 2018 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:55:52,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 270 transitions, 2676 flow [2024-06-27 19:55:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 270 transitions, 2570 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-27 19:55:53,015 INFO L231 Difference]: Finished difference. Result has 283 places, 257 transitions, 2062 flow [2024-06-27 19:55:53,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2062, PETRI_PLACES=283, PETRI_TRANSITIONS=257} [2024-06-27 19:55:53,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-27 19:55:53,016 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 257 transitions, 2062 flow [2024-06-27 19:55:53,016 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 19:55:53,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:53,016 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 19:55:53,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:55:53,016 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:53,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1154399441, now seen corresponding path program 18 times [2024-06-27 19:55:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:53,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132308013] [2024-06-27 19:55:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:53,825 INFO 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 19:55:53,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132308013] [2024-06-27 19:55:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132308013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:53,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422853190] [2024-06-27 19:55:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:53,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:53,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 257 transitions, 2062 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 19:55:53,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:53,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:53,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:54,357 INFO L124 PetriNetUnfolderBase]: 781/1361 cut-off events. [2024-06-27 19:55:54,357 INFO L125 PetriNetUnfolderBase]: For 147241/147241 co-relation queries the response was YES. [2024-06-27 19:55:54,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9747 conditions, 1361 events. 781/1361 cut-off events. For 147241/147241 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7091 event pairs, 110 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 9609. Up to 1271 conditions per place. [2024-06-27 19:55:54,370 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2024-06-27 19:55:54,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 288 transitions, 3235 flow [2024-06-27 19:55:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:55:54,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:55:54,371 INFO L175 Difference]: Start difference. First operand has 283 places, 257 transitions, 2062 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:55:54,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 288 transitions, 3235 flow [2024-06-27 19:55:54,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 288 transitions, 3080 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:54,937 INFO L231 Difference]: Finished difference. Result has 289 places, 277 transitions, 2457 flow [2024-06-27 19:55:54,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=289, PETRI_TRANSITIONS=277} [2024-06-27 19:55:54,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-27 19:55:54,937 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 2457 flow [2024-06-27 19:55:54,937 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 19:55:54,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:54,937 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 19:55:54,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:55:54,938 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:54,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash 494124481, now seen corresponding path program 12 times [2024-06-27 19:55:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390805989] [2024-06-27 19:55:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:56,041 INFO 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 19:55:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390805989] [2024-06-27 19:55:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390805989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:56,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:56,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687441303] [2024-06-27 19:55:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:56,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:56,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:56,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 277 transitions, 2457 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 19:55:56,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:56,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:56,591 INFO L124 PetriNetUnfolderBase]: 785/1369 cut-off events. [2024-06-27 19:55:56,591 INFO L125 PetriNetUnfolderBase]: For 155808/155808 co-relation queries the response was YES. [2024-06-27 19:55:56,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 1369 events. 785/1369 cut-off events. For 155808/155808 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7161 event pairs, 112 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9731. Up to 1323 conditions per place. [2024-06-27 19:55:56,605 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 19 changer transitions 0/290 dead transitions. [2024-06-27 19:55:56,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 290 transitions, 3089 flow [2024-06-27 19:55:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:55:56,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:55:56,606 INFO L175 Difference]: Start difference. First operand has 289 places, 277 transitions, 2457 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:55:56,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 290 transitions, 3089 flow [2024-06-27 19:55:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 290 transitions, 2856 flow, removed 100 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:57,132 INFO L231 Difference]: Finished difference. Result has 292 places, 278 transitions, 2294 flow [2024-06-27 19:55:57,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2294, PETRI_PLACES=292, PETRI_TRANSITIONS=278} [2024-06-27 19:55:57,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-27 19:55:57,132 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 278 transitions, 2294 flow [2024-06-27 19:55:57,132 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 19:55:57,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:57,133 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 19:55:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:55:57,133 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:57,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1856846577, now seen corresponding path program 13 times [2024-06-27 19:55:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054549251] [2024-06-27 19:55:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:58,254 INFO 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 19:55:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:58,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054549251] [2024-06-27 19:55:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054549251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:58,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:58,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770981469] [2024-06-27 19:55:58,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:58,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:58,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:55:58,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 278 transitions, 2294 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 19:55:58,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:58,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:55:58,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:58,762 INFO L124 PetriNetUnfolderBase]: 789/1377 cut-off events. [2024-06-27 19:55:58,763 INFO L125 PetriNetUnfolderBase]: For 150881/150881 co-relation queries the response was YES. [2024-06-27 19:55:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9366 conditions, 1377 events. 789/1377 cut-off events. For 150881/150881 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7225 event pairs, 114 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 9227. Up to 1311 conditions per place. [2024-06-27 19:55:58,775 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 268 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2024-06-27 19:55:58,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 291 transitions, 2928 flow [2024-06-27 19:55:58,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:55:58,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:55:58,776 INFO L175 Difference]: Start difference. First operand has 292 places, 278 transitions, 2294 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:55:58,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 291 transitions, 2928 flow [2024-06-27 19:55:59,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 291 transitions, 2863 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:59,290 INFO L231 Difference]: Finished difference. Result has 295 places, 279 transitions, 2305 flow [2024-06-27 19:55:59,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2305, PETRI_PLACES=295, PETRI_TRANSITIONS=279} [2024-06-27 19:55:59,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-27 19:55:59,291 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 279 transitions, 2305 flow [2024-06-27 19:55:59,292 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 19:55:59,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:59,292 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 19:55:59,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:55:59,292 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:55:59,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash 485546347, now seen corresponding path program 19 times [2024-06-27 19:55:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:59,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372053935] [2024-06-27 19:55:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:59,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:00,129 INFO 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 19:56:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372053935] [2024-06-27 19:56:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372053935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:00,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675195832] [2024-06-27 19:56:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:00,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:00,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 279 transitions, 2305 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 19:56:00,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:00,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:00,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:00,714 INFO L124 PetriNetUnfolderBase]: 793/1384 cut-off events. [2024-06-27 19:56:00,714 INFO L125 PetriNetUnfolderBase]: For 154875/154875 co-relation queries the response was YES. [2024-06-27 19:56:00,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9358 conditions, 1384 events. 793/1384 cut-off events. For 154875/154875 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7253 event pairs, 112 based on Foata normal form. 3/1386 useless extension candidates. Maximal degree in co-relation 9219. Up to 1303 conditions per place. [2024-06-27 19:56:00,730 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 27 changer transitions 0/298 dead transitions. [2024-06-27 19:56:00,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 298 transitions, 3045 flow [2024-06-27 19:56:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:56:00,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:56:00,731 INFO L175 Difference]: Start difference. First operand has 295 places, 279 transitions, 2305 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:56:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 298 transitions, 3045 flow [2024-06-27 19:56:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 298 transitions, 2923 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:01,284 INFO L231 Difference]: Finished difference. Result has 298 places, 281 transitions, 2345 flow [2024-06-27 19:56:01,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2345, PETRI_PLACES=298, PETRI_TRANSITIONS=281} [2024-06-27 19:56:01,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-27 19:56:01,285 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 281 transitions, 2345 flow [2024-06-27 19:56:01,285 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 19:56:01,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:01,285 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 19:56:01,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:56:01,286 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:01,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1983139289, now seen corresponding path program 14 times [2024-06-27 19:56:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534349062] [2024-06-27 19:56:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534349062] [2024-06-27 19:56:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534349062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:02,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:02,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117160849] [2024-06-27 19:56:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:02,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:02,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 281 transitions, 2345 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 19:56:02,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:02,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:02,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:02,749 INFO L124 PetriNetUnfolderBase]: 797/1392 cut-off events. [2024-06-27 19:56:02,750 INFO L125 PetriNetUnfolderBase]: For 151288/151288 co-relation queries the response was YES. [2024-06-27 19:56:02,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 1392 events. 797/1392 cut-off events. For 151288/151288 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7326 event pairs, 118 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 9259. Up to 1350 conditions per place. [2024-06-27 19:56:02,763 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 277 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-06-27 19:56:02,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 294 transitions, 2985 flow [2024-06-27 19:56:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:56:02,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:56:02,764 INFO L175 Difference]: Start difference. First operand has 298 places, 281 transitions, 2345 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:56:02,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 294 transitions, 2985 flow [2024-06-27 19:56:03,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 294 transitions, 2829 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:03,322 INFO L231 Difference]: Finished difference. Result has 299 places, 282 transitions, 2255 flow [2024-06-27 19:56:03,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2255, PETRI_PLACES=299, PETRI_TRANSITIONS=282} [2024-06-27 19:56:03,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-27 19:56:03,323 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 282 transitions, 2255 flow [2024-06-27 19:56:03,323 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 19:56:03,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:03,323 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 19:56:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:56:03,323 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:03,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -379816989, now seen corresponding path program 1 times [2024-06-27 19:56:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85710250] [2024-06-27 19:56:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85710250] [2024-06-27 19:56:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85710250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:04,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354611317] [2024-06-27 19:56:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:04,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:04,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:04,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 282 transitions, 2255 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 19:56:04,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:04,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:04,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:04,750 INFO L124 PetriNetUnfolderBase]: 795/1389 cut-off events. [2024-06-27 19:56:04,750 INFO L125 PetriNetUnfolderBase]: For 141103/141103 co-relation queries the response was YES. [2024-06-27 19:56:04,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9115 conditions, 1389 events. 795/1389 cut-off events. For 141103/141103 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7327 event pairs, 118 based on Foata normal form. 1/1389 useless extension candidates. Maximal degree in co-relation 8974. Up to 1338 conditions per place. [2024-06-27 19:56:04,765 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 24 changer transitions 0/296 dead transitions. [2024-06-27 19:56:04,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 296 transitions, 2929 flow [2024-06-27 19:56:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:56:04,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:56:04,766 INFO L175 Difference]: Start difference. First operand has 299 places, 282 transitions, 2255 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:56:04,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 296 transitions, 2929 flow [2024-06-27 19:56:05,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2873 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:05,297 INFO L231 Difference]: Finished difference. Result has 301 places, 284 transitions, 2313 flow [2024-06-27 19:56:05,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2313, PETRI_PLACES=301, PETRI_TRANSITIONS=284} [2024-06-27 19:56:05,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-27 19:56:05,298 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 284 transitions, 2313 flow [2024-06-27 19:56:05,298 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 19:56:05,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:05,298 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 19:56:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:56:05,298 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:05,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1628568791, now seen corresponding path program 1 times [2024-06-27 19:56:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875089149] [2024-06-27 19:56:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:06,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:06,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875089149] [2024-06-27 19:56:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875089149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:06,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:06,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932147584] [2024-06-27 19:56:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:06,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:06,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:06,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 284 transitions, 2313 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 19:56:06,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:06,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:06,666 INFO L124 PetriNetUnfolderBase]: 796/1391 cut-off events. [2024-06-27 19:56:06,666 INFO L125 PetriNetUnfolderBase]: For 143087/143087 co-relation queries the response was YES. [2024-06-27 19:56:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9077 conditions, 1391 events. 796/1391 cut-off events. For 143087/143087 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7351 event pairs, 117 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 8935. Up to 1344 conditions per place. [2024-06-27 19:56:06,680 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 278 selfloop transitions, 20 changer transitions 0/300 dead transitions. [2024-06-27 19:56:06,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 300 transitions, 3007 flow [2024-06-27 19:56:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:56:06,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:56:06,681 INFO L175 Difference]: Start difference. First operand has 301 places, 284 transitions, 2313 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:56:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 300 transitions, 3007 flow [2024-06-27 19:56:07,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 300 transitions, 2911 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:07,291 INFO L231 Difference]: Finished difference. Result has 304 places, 286 transitions, 2326 flow [2024-06-27 19:56:07,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2326, PETRI_PLACES=304, PETRI_TRANSITIONS=286} [2024-06-27 19:56:07,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-27 19:56:07,291 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 286 transitions, 2326 flow [2024-06-27 19:56:07,291 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 19:56:07,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:07,292 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 19:56:07,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:56:07,292 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:07,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1971174839, now seen corresponding path program 15 times [2024-06-27 19:56:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513033302] [2024-06-27 19:56:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513033302] [2024-06-27 19:56:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513033302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097190642] [2024-06-27 19:56:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:08,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:08,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:08,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 286 transitions, 2326 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 19:56:08,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:08,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:08,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:08,735 INFO L124 PetriNetUnfolderBase]: 793/1386 cut-off events. [2024-06-27 19:56:08,735 INFO L125 PetriNetUnfolderBase]: For 130709/130709 co-relation queries the response was YES. [2024-06-27 19:56:08,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 1386 events. 793/1386 cut-off events. For 130709/130709 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7326 event pairs, 118 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 8635. Up to 1322 conditions per place. [2024-06-27 19:56:08,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 275 selfloop transitions, 21 changer transitions 0/298 dead transitions. [2024-06-27 19:56:08,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 298 transitions, 2946 flow [2024-06-27 19:56:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:56:08,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:56:08,750 INFO L175 Difference]: Start difference. First operand has 304 places, 286 transitions, 2326 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:56:08,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 298 transitions, 2946 flow [2024-06-27 19:56:09,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 298 transitions, 2855 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:09,360 INFO L231 Difference]: Finished difference. Result has 305 places, 286 transitions, 2281 flow [2024-06-27 19:56:09,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2281, PETRI_PLACES=305, PETRI_TRANSITIONS=286} [2024-06-27 19:56:09,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-27 19:56:09,361 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 286 transitions, 2281 flow [2024-06-27 19:56:09,361 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 19:56:09,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:09,361 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 19:56:09,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:56:09,361 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:09,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 257623475, now seen corresponding path program 1 times [2024-06-27 19:56:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175512969] [2024-06-27 19:56:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:10,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:10,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175512969] [2024-06-27 19:56:10,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175512969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:10,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:10,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:10,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791161197] [2024-06-27 19:56:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:10,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:10,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:10,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 286 transitions, 2281 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 19:56:10,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:10,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:10,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:11,052 INFO L124 PetriNetUnfolderBase]: 840/1479 cut-off events. [2024-06-27 19:56:11,052 INFO L125 PetriNetUnfolderBase]: For 219140/219140 co-relation queries the response was YES. [2024-06-27 19:56:11,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11017 conditions, 1479 events. 840/1479 cut-off events. For 219140/219140 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7895 event pairs, 117 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 10873. Up to 1255 conditions per place. [2024-06-27 19:56:11,067 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 30 changer transitions 0/326 dead transitions. [2024-06-27 19:56:11,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 326 transitions, 3447 flow [2024-06-27 19:56:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-27 19:56:11,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-27 19:56:11,068 INFO L175 Difference]: Start difference. First operand has 305 places, 286 transitions, 2281 flow. Second operand 13 states and 162 transitions. [2024-06-27 19:56:11,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 326 transitions, 3447 flow [2024-06-27 19:56:11,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 326 transitions, 3272 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:11,735 INFO L231 Difference]: Finished difference. Result has 307 places, 288 transitions, 2256 flow [2024-06-27 19:56:11,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2256, PETRI_PLACES=307, PETRI_TRANSITIONS=288} [2024-06-27 19:56:11,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-27 19:56:11,736 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 288 transitions, 2256 flow [2024-06-27 19:56:11,736 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 19:56:11,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:11,736 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 19:56:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:56:11,737 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:11,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 259501145, now seen corresponding path program 2 times [2024-06-27 19:56:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478752932] [2024-06-27 19:56:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:12,744 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 19:56:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478752932] [2024-06-27 19:56:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478752932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198956272] [2024-06-27 19:56:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:12,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:12,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:12,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:12,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 288 transitions, 2256 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 19:56:12,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:12,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:12,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:13,442 INFO L124 PetriNetUnfolderBase]: 844/1487 cut-off events. [2024-06-27 19:56:13,443 INFO L125 PetriNetUnfolderBase]: For 223125/223125 co-relation queries the response was YES. [2024-06-27 19:56:13,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1487 events. 844/1487 cut-off events. For 223125/223125 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7969 event pairs, 139 based on Foata normal form. 2/1488 useless extension candidates. Maximal degree in co-relation 10824. Up to 1408 conditions per place. [2024-06-27 19:56:13,458 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 26 changer transitions 0/317 dead transitions. [2024-06-27 19:56:13,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 3008 flow [2024-06-27 19:56:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-27 19:56:13,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-27 19:56:13,459 INFO L175 Difference]: Start difference. First operand has 307 places, 288 transitions, 2256 flow. Second operand 13 states and 151 transitions. [2024-06-27 19:56:13,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 3008 flow [2024-06-27 19:56:14,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 317 transitions, 2882 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 19:56:14,353 INFO L231 Difference]: Finished difference. Result has 310 places, 289 transitions, 2232 flow [2024-06-27 19:56:14,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2232, PETRI_PLACES=310, PETRI_TRANSITIONS=289} [2024-06-27 19:56:14,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-27 19:56:14,353 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 289 transitions, 2232 flow [2024-06-27 19:56:14,354 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 19:56:14,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:14,354 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 19:56:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:56:14,354 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:14,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash -535285012, now seen corresponding path program 1 times [2024-06-27 19:56:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300786849] [2024-06-27 19:56:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:15,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300786849] [2024-06-27 19:56:15,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300786849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:15,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995349668] [2024-06-27 19:56:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:15,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:15,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 289 transitions, 2232 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 19:56:15,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:15,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:15,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:15,974 INFO L124 PetriNetUnfolderBase]: 860/1513 cut-off events. [2024-06-27 19:56:15,974 INFO L125 PetriNetUnfolderBase]: For 245303/245303 co-relation queries the response was YES. [2024-06-27 19:56:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11473 conditions, 1513 events. 860/1513 cut-off events. For 245303/245303 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8117 event pairs, 135 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 11329. Up to 1411 conditions per place. [2024-06-27 19:56:15,991 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 31 changer transitions 0/324 dead transitions. [2024-06-27 19:56:15,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 324 transitions, 3392 flow [2024-06-27 19:56:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-27 19:56:15,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-27 19:56:15,992 INFO L175 Difference]: Start difference. First operand has 310 places, 289 transitions, 2232 flow. Second operand 13 states and 157 transitions. [2024-06-27 19:56:15,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 324 transitions, 3392 flow [2024-06-27 19:56:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 324 transitions, 3308 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:16,803 INFO L231 Difference]: Finished difference. Result has 312 places, 293 transitions, 2419 flow [2024-06-27 19:56:16,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2419, PETRI_PLACES=312, PETRI_TRANSITIONS=293} [2024-06-27 19:56:16,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-27 19:56:16,804 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 293 transitions, 2419 flow [2024-06-27 19:56:16,804 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 19:56:16,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:16,804 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 19:56:16,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:56:16,804 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:16,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2035306093, now seen corresponding path program 3 times [2024-06-27 19:56:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173402954] [2024-06-27 19:56:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:17,813 INFO 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 19:56:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173402954] [2024-06-27 19:56:17,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173402954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:17,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:17,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889872551] [2024-06-27 19:56:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:18,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:18,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 293 transitions, 2419 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 19:56:18,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:18,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:18,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:18,670 INFO L124 PetriNetUnfolderBase]: 864/1521 cut-off events. [2024-06-27 19:56:18,670 INFO L125 PetriNetUnfolderBase]: For 250381/250381 co-relation queries the response was YES. [2024-06-27 19:56:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11596 conditions, 1521 events. 864/1521 cut-off events. For 250381/250381 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8175 event pairs, 129 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 11451. Up to 1323 conditions per place. [2024-06-27 19:56:18,683 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 31 changer transitions 0/331 dead transitions. [2024-06-27 19:56:18,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 331 transitions, 3557 flow [2024-06-27 19:56:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-27 19:56:18,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-27 19:56:18,684 INFO L175 Difference]: Start difference. First operand has 312 places, 293 transitions, 2419 flow. Second operand 13 states and 161 transitions. [2024-06-27 19:56:18,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 331 transitions, 3557 flow [2024-06-27 19:56:19,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 331 transitions, 3425 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:19,522 INFO L231 Difference]: Finished difference. Result has 316 places, 294 transitions, 2393 flow [2024-06-27 19:56:19,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2393, PETRI_PLACES=316, PETRI_TRANSITIONS=294} [2024-06-27 19:56:19,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-27 19:56:19,522 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 294 transitions, 2393 flow [2024-06-27 19:56:19,522 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 19:56:19,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:19,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:56:19,523 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:19,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash 346337260, now seen corresponding path program 2 times [2024-06-27 19:56:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117640125] [2024-06-27 19:56:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:19,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:20,699 INFO 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 19:56:20,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:20,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117640125] [2024-06-27 19:56:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117640125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:20,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:20,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267702604] [2024-06-27 19:56:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:20,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:20,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:20,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:20,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:20,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 294 transitions, 2393 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 19:56:20,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:20,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:20,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:21,427 INFO L124 PetriNetUnfolderBase]: 873/1536 cut-off events. [2024-06-27 19:56:21,427 INFO L125 PetriNetUnfolderBase]: For 256799/256799 co-relation queries the response was YES. [2024-06-27 19:56:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 1536 events. 873/1536 cut-off events. For 256799/256799 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8262 event pairs, 135 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 11588. Up to 1463 conditions per place. [2024-06-27 19:56:21,443 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 25 changer transitions 0/325 dead transitions. [2024-06-27 19:56:21,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 325 transitions, 3235 flow [2024-06-27 19:56:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-27 19:56:21,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581730769230769 [2024-06-27 19:56:21,445 INFO L175 Difference]: Start difference. First operand has 316 places, 294 transitions, 2393 flow. Second operand 13 states and 149 transitions. [2024-06-27 19:56:21,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 325 transitions, 3235 flow [2024-06-27 19:56:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 325 transitions, 3133 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:22,333 INFO L231 Difference]: Finished difference. Result has 319 places, 298 transitions, 2478 flow [2024-06-27 19:56:22,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2478, PETRI_PLACES=319, PETRI_TRANSITIONS=298} [2024-06-27 19:56:22,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-27 19:56:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 298 transitions, 2478 flow [2024-06-27 19:56:22,334 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 19:56:22,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:22,334 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 19:56:22,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:56:22,334 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:22,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash -243449967, now seen corresponding path program 4 times [2024-06-27 19:56:22,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:22,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377256553] [2024-06-27 19:56:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377256553] [2024-06-27 19:56:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377256553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:23,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:23,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700464541] [2024-06-27 19:56:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:23,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:23,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 298 transitions, 2478 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 19:56:23,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:23,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:23,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:24,192 INFO L124 PetriNetUnfolderBase]: 861/1516 cut-off events. [2024-06-27 19:56:24,192 INFO L125 PetriNetUnfolderBase]: For 261039/261039 co-relation queries the response was YES. [2024-06-27 19:56:24,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10233 conditions, 1516 events. 861/1516 cut-off events. For 261039/261039 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8190 event pairs, 121 based on Foata normal form. 14/1529 useless extension candidates. Maximal degree in co-relation 10084. Up to 1391 conditions per place. [2024-06-27 19:56:24,208 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 19 changer transitions 12/330 dead transitions. [2024-06-27 19:56:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 330 transitions, 3370 flow [2024-06-27 19:56:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 19:56:24,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 19:56:24,209 INFO L175 Difference]: Start difference. First operand has 319 places, 298 transitions, 2478 flow. Second operand 12 states and 145 transitions. [2024-06-27 19:56:24,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 330 transitions, 3370 flow [2024-06-27 19:56:24,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 330 transitions, 3231 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:24,833 INFO L231 Difference]: Finished difference. Result has 320 places, 294 transitions, 2381 flow [2024-06-27 19:56:24,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2381, PETRI_PLACES=320, PETRI_TRANSITIONS=294} [2024-06-27 19:56:24,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:56:24,833 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 294 transitions, 2381 flow [2024-06-27 19:56:24,833 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 19:56:24,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:24,833 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 19:56:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:56:24,834 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:24,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2122001623, now seen corresponding path program 5 times [2024-06-27 19:56:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:24,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032089836] [2024-06-27 19:56:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032089836] [2024-06-27 19:56:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032089836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226449633] [2024-06-27 19:56:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:25,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:26,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:26,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 294 transitions, 2381 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 19:56:26,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:26,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:26,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:26,574 INFO L124 PetriNetUnfolderBase]: 824/1445 cut-off events. [2024-06-27 19:56:26,574 INFO L125 PetriNetUnfolderBase]: For 169550/169550 co-relation queries the response was YES. [2024-06-27 19:56:26,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9406 conditions, 1445 events. 824/1445 cut-off events. For 169550/169550 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7768 event pairs, 116 based on Foata normal form. 2/1446 useless extension candidates. Maximal degree in co-relation 9257. Up to 1380 conditions per place. [2024-06-27 19:56:26,590 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 22 changer transitions 0/318 dead transitions. [2024-06-27 19:56:26,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 318 transitions, 3079 flow [2024-06-27 19:56:26,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:56:26,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 19:56:26,591 INFO L175 Difference]: Start difference. First operand has 320 places, 294 transitions, 2381 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:56:26,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 318 transitions, 3079 flow [2024-06-27 19:56:27,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 318 transitions, 2963 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:27,154 INFO L231 Difference]: Finished difference. Result has 320 places, 294 transitions, 2313 flow [2024-06-27 19:56:27,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2313, PETRI_PLACES=320, PETRI_TRANSITIONS=294} [2024-06-27 19:56:27,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:56:27,154 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 294 transitions, 2313 flow [2024-06-27 19:56:27,155 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 19:56:27,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:27,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:27,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:56:27,155 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:27,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash -243593962, now seen corresponding path program 3 times [2024-06-27 19:56:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616402989] [2024-06-27 19:56:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:28,277 INFO 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 19:56:28,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:28,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616402989] [2024-06-27 19:56:28,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616402989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:28,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:28,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916597305] [2024-06-27 19:56:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:28,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 294 transitions, 2313 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 19:56:28,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:28,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:29,126 INFO L124 PetriNetUnfolderBase]: 820/1439 cut-off events. [2024-06-27 19:56:29,126 INFO L125 PetriNetUnfolderBase]: For 156828/156828 co-relation queries the response was YES. [2024-06-27 19:56:29,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8967 conditions, 1439 events. 820/1439 cut-off events. For 156828/156828 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7752 event pairs, 115 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 8817. Up to 1368 conditions per place. [2024-06-27 19:56:29,145 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 293 selfloop transitions, 24 changer transitions 0/319 dead transitions. [2024-06-27 19:56:29,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 319 transitions, 3019 flow [2024-06-27 19:56:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:56:29,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:56:29,147 INFO L175 Difference]: Start difference. First operand has 320 places, 294 transitions, 2313 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:56:29,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 319 transitions, 3019 flow [2024-06-27 19:56:29,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 319 transitions, 2874 flow, removed 44 selfloop flow, removed 12 redundant places. [2024-06-27 19:56:29,791 INFO L231 Difference]: Finished difference. Result has 320 places, 294 transitions, 2221 flow [2024-06-27 19:56:29,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2221, PETRI_PLACES=320, PETRI_TRANSITIONS=294} [2024-06-27 19:56:29,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:56:29,791 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 294 transitions, 2221 flow [2024-06-27 19:56:29,791 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 19:56:29,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:29,791 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 19:56:29,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:56:29,792 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:29,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1406782608, now seen corresponding path program 1 times [2024-06-27 19:56:29,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327972369] [2024-06-27 19:56:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:29,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:30,921 INFO 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 19:56:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327972369] [2024-06-27 19:56:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327972369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634492336] [2024-06-27 19:56:30,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:30,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:31,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:31,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 294 transitions, 2221 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 19:56:31,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:31,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:31,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:31,587 INFO L124 PetriNetUnfolderBase]: 824/1447 cut-off events. [2024-06-27 19:56:31,588 INFO L125 PetriNetUnfolderBase]: For 157611/157611 co-relation queries the response was YES. [2024-06-27 19:56:31,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8876 conditions, 1447 events. 824/1447 cut-off events. For 157611/157611 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7821 event pairs, 73 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 8726. Up to 1142 conditions per place. [2024-06-27 19:56:31,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 81 changer transitions 0/322 dead transitions. [2024-06-27 19:56:31,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 322 transitions, 3032 flow [2024-06-27 19:56:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:56:31,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 19:56:31,604 INFO L175 Difference]: Start difference. First operand has 320 places, 294 transitions, 2221 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:56:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 322 transitions, 3032 flow [2024-06-27 19:56:32,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 322 transitions, 2961 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 19:56:32,211 INFO L231 Difference]: Finished difference. Result has 321 places, 297 transitions, 2380 flow [2024-06-27 19:56:32,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2380, PETRI_PLACES=321, PETRI_TRANSITIONS=297} [2024-06-27 19:56:32,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-27 19:56:32,212 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 297 transitions, 2380 flow [2024-06-27 19:56:32,212 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 19:56:32,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:32,212 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 19:56:32,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:56:32,212 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:32,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1406567282, now seen corresponding path program 4 times [2024-06-27 19:56:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:32,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603991693] [2024-06-27 19:56:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:33,154 INFO 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 19:56:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603991693] [2024-06-27 19:56:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603991693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:33,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:33,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:33,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421451284] [2024-06-27 19:56:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:33,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:33,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:33,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:33,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 297 transitions, 2380 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 19:56:33,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:33,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:33,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:33,802 INFO L124 PetriNetUnfolderBase]: 830/1457 cut-off events. [2024-06-27 19:56:33,802 INFO L125 PetriNetUnfolderBase]: For 162673/162673 co-relation queries the response was YES. [2024-06-27 19:56:33,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1457 events. 830/1457 cut-off events. For 162673/162673 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7854 event pairs, 57 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 9099. Up to 899 conditions per place. [2024-06-27 19:56:33,817 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 205 selfloop transitions, 126 changer transitions 0/333 dead transitions. [2024-06-27 19:56:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 333 transitions, 3672 flow [2024-06-27 19:56:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-27 19:56:33,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-27 19:56:33,819 INFO L175 Difference]: Start difference. First operand has 321 places, 297 transitions, 2380 flow. Second operand 13 states and 168 transitions. [2024-06-27 19:56:33,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 333 transitions, 3672 flow [2024-06-27 19:56:34,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 333 transitions, 3468 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:34,371 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 2676 flow [2024-06-27 19:56:34,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2676, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2024-06-27 19:56:34,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 19:56:34,372 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 2676 flow [2024-06-27 19:56:34,372 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 19:56:34,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:34,372 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 19:56:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:56:34,372 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:34,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1406567127, now seen corresponding path program 6 times [2024-06-27 19:56:34,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:34,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301024501] [2024-06-27 19:56:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:35,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:35,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301024501] [2024-06-27 19:56:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301024501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:35,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749884928] [2024-06-27 19:56:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:35,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:35,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 2676 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 19:56:35,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:35,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:35,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:36,100 INFO L124 PetriNetUnfolderBase]: 854/1509 cut-off events. [2024-06-27 19:56:36,101 INFO L125 PetriNetUnfolderBase]: For 252772/252772 co-relation queries the response was YES. [2024-06-27 19:56:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9952 conditions, 1509 events. 854/1509 cut-off events. For 252772/252772 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8280 event pairs, 77 based on Foata normal form. 14/1522 useless extension candidates. Maximal degree in co-relation 9798. Up to 948 conditions per place. [2024-06-27 19:56:36,118 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 219 selfloop transitions, 105 changer transitions 11/337 dead transitions. [2024-06-27 19:56:36,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 337 transitions, 3738 flow [2024-06-27 19:56:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:56:36,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:56:36,119 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 2676 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:56:36,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 337 transitions, 3738 flow [2024-06-27 19:56:36,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 337 transitions, 3537 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:36,668 INFO L231 Difference]: Finished difference. Result has 330 places, 299 transitions, 2719 flow [2024-06-27 19:56:36,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2719, PETRI_PLACES=330, PETRI_TRANSITIONS=299} [2024-06-27 19:56:36,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-27 19:56:36,668 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 299 transitions, 2719 flow [2024-06-27 19:56:36,668 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 19:56:36,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:36,669 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 19:56:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:56:36,669 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:36,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1401204747, now seen corresponding path program 7 times [2024-06-27 19:56:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:36,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058833591] [2024-06-27 19:56:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:36,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058833591] [2024-06-27 19:56:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058833591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139996012] [2024-06-27 19:56:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:37,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:37,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 299 transitions, 2719 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 19:56:37,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:37,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:37,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:38,275 INFO L124 PetriNetUnfolderBase]: 865/1542 cut-off events. [2024-06-27 19:56:38,275 INFO L125 PetriNetUnfolderBase]: For 257844/257844 co-relation queries the response was YES. [2024-06-27 19:56:38,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10325 conditions, 1542 events. 865/1542 cut-off events. For 257844/257844 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8532 event pairs, 83 based on Foata normal form. 14/1555 useless extension candidates. Maximal degree in co-relation 10169. Up to 985 conditions per place. [2024-06-27 19:56:38,291 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 221 selfloop transitions, 103 changer transitions 12/338 dead transitions. [2024-06-27 19:56:38,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 338 transitions, 3803 flow [2024-06-27 19:56:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-27 19:56:38,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-27 19:56:38,293 INFO L175 Difference]: Start difference. First operand has 330 places, 299 transitions, 2719 flow. Second operand 12 states and 163 transitions. [2024-06-27 19:56:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 338 transitions, 3803 flow [2024-06-27 19:56:38,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 338 transitions, 3577 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 19:56:38,985 INFO L231 Difference]: Finished difference. Result has 333 places, 300 transitions, 2758 flow [2024-06-27 19:56:38,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2758, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2024-06-27 19:56:38,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-27 19:56:38,986 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 2758 flow [2024-06-27 19:56:38,986 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 19:56:38,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:38,986 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 19:56:38,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:56:38,986 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:38,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:38,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1401204902, now seen corresponding path program 5 times [2024-06-27 19:56:38,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:38,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180313480] [2024-06-27 19:56:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:39,897 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 19:56:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180313480] [2024-06-27 19:56:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180313480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:39,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:39,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118500320] [2024-06-27 19:56:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:39,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:40,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:40,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 2758 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 19:56:40,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:40,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:40,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:40,563 INFO L124 PetriNetUnfolderBase]: 859/1532 cut-off events. [2024-06-27 19:56:40,563 INFO L125 PetriNetUnfolderBase]: For 176108/176108 co-relation queries the response was YES. [2024-06-27 19:56:40,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 1532 events. 859/1532 cut-off events. For 176108/176108 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8455 event pairs, 73 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 10204. Up to 978 conditions per place. [2024-06-27 19:56:40,576 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 207 selfloop transitions, 120 changer transitions 5/334 dead transitions. [2024-06-27 19:56:40,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 334 transitions, 4014 flow [2024-06-27 19:56:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 19:56:40,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:56:40,577 INFO L175 Difference]: Start difference. First operand has 333 places, 300 transitions, 2758 flow. Second operand 12 states and 160 transitions. [2024-06-27 19:56:40,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 334 transitions, 4014 flow [2024-06-27 19:56:41,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 334 transitions, 3793 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:41,280 INFO L231 Difference]: Finished difference. Result has 336 places, 302 transitions, 2894 flow [2024-06-27 19:56:41,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2894, PETRI_PLACES=336, PETRI_TRANSITIONS=302} [2024-06-27 19:56:41,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-27 19:56:41,281 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 302 transitions, 2894 flow [2024-06-27 19:56:41,281 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 19:56:41,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:41,281 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 19:56:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:56:41,281 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:41,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash -374751791, now seen corresponding path program 8 times [2024-06-27 19:56:41,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:41,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648463625] [2024-06-27 19:56:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:41,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:42,245 INFO 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 19:56:42,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648463625] [2024-06-27 19:56:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648463625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740963660] [2024-06-27 19:56:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:42,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:42,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:42,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:42,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:42,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 302 transitions, 2894 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 19:56:42,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:42,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:42,946 INFO L124 PetriNetUnfolderBase]: 870/1553 cut-off events. [2024-06-27 19:56:42,946 INFO L125 PetriNetUnfolderBase]: For 196305/196305 co-relation queries the response was YES. [2024-06-27 19:56:42,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1553 events. 870/1553 cut-off events. For 196305/196305 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8659 event pairs, 72 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 10802. Up to 938 conditions per place. [2024-06-27 19:56:42,963 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 219 selfloop transitions, 111 changer transitions 6/338 dead transitions. [2024-06-27 19:56:42,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 338 transitions, 4158 flow [2024-06-27 19:56:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:56:42,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:56:42,964 INFO L175 Difference]: Start difference. First operand has 336 places, 302 transitions, 2894 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:56:42,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 338 transitions, 4158 flow [2024-06-27 19:56:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 3888 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:43,704 INFO L231 Difference]: Finished difference. Result has 340 places, 304 transitions, 2962 flow [2024-06-27 19:56:43,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2962, PETRI_PLACES=340, PETRI_TRANSITIONS=304} [2024-06-27 19:56:43,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 19:56:43,705 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 304 transitions, 2962 flow [2024-06-27 19:56:43,705 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 19:56:43,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:43,705 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 19:56:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:56:43,705 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:43,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -374747916, now seen corresponding path program 6 times [2024-06-27 19:56:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104199214] [2024-06-27 19:56:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:44,703 INFO 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 19:56:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104199214] [2024-06-27 19:56:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104199214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292070810] [2024-06-27 19:56:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:44,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:44,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 304 transitions, 2962 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 19:56:44,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:44,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:44,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:45,401 INFO L124 PetriNetUnfolderBase]: 876/1563 cut-off events. [2024-06-27 19:56:45,401 INFO L125 PetriNetUnfolderBase]: For 201440/201440 co-relation queries the response was YES. [2024-06-27 19:56:45,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11157 conditions, 1563 events. 876/1563 cut-off events. For 201440/201440 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8679 event pairs, 76 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 10996. Up to 980 conditions per place. [2024-06-27 19:56:45,419 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 205 selfloop transitions, 127 changer transitions 2/336 dead transitions. [2024-06-27 19:56:45,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 336 transitions, 4184 flow [2024-06-27 19:56:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:56:45,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:56:45,420 INFO L175 Difference]: Start difference. First operand has 340 places, 304 transitions, 2962 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:56:45,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 336 transitions, 4184 flow [2024-06-27 19:56:46,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 336 transitions, 3910 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:46,113 INFO L231 Difference]: Finished difference. Result has 343 places, 306 transitions, 3063 flow [2024-06-27 19:56:46,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3063, PETRI_PLACES=343, PETRI_TRANSITIONS=306} [2024-06-27 19:56:46,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:56:46,113 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 306 transitions, 3063 flow [2024-06-27 19:56:46,113 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 19:56:46,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:46,114 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 19:56:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:56:46,114 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:46,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:46,114 INFO L85 PathProgramCache]: Analyzing trace with hash -374748071, now seen corresponding path program 9 times [2024-06-27 19:56:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:46,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485077901] [2024-06-27 19:56:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:46,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:47,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:47,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485077901] [2024-06-27 19:56:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485077901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572321227] [2024-06-27 19:56:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:47,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 306 transitions, 3063 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 19:56:47,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:47,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:47,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:47,714 INFO L124 PetriNetUnfolderBase]: 873/1558 cut-off events. [2024-06-27 19:56:47,714 INFO L125 PetriNetUnfolderBase]: For 187359/187359 co-relation queries the response was YES. [2024-06-27 19:56:47,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10832 conditions, 1558 events. 873/1558 cut-off events. For 187359/187359 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8691 event pairs, 79 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 10670. Up to 998 conditions per place. [2024-06-27 19:56:47,734 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 221 selfloop transitions, 110 changer transitions 9/342 dead transitions. [2024-06-27 19:56:47,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 342 transitions, 4057 flow [2024-06-27 19:56:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-27 19:56:47,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2024-06-27 19:56:47,735 INFO L175 Difference]: Start difference. First operand has 343 places, 306 transitions, 3063 flow. Second operand 13 states and 170 transitions. [2024-06-27 19:56:47,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 342 transitions, 4057 flow [2024-06-27 19:56:48,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 342 transitions, 3613 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-06-27 19:56:48,428 INFO L231 Difference]: Finished difference. Result has 344 places, 306 transitions, 2845 flow [2024-06-27 19:56:48,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2845, PETRI_PLACES=344, PETRI_TRANSITIONS=306} [2024-06-27 19:56:48,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:56:48,428 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 306 transitions, 2845 flow [2024-06-27 19:56:48,429 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 19:56:48,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:48,429 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 19:56:48,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:56:48,429 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:48,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1846990110, now seen corresponding path program 2 times [2024-06-27 19:56:48,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:48,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422919351] [2024-06-27 19:56:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:48,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:49,541 INFO 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 19:56:49,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:49,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422919351] [2024-06-27 19:56:49,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422919351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:49,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098171342] [2024-06-27 19:56:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:49,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:49,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:49,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 306 transitions, 2845 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 19:56:49,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:49,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:49,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:50,130 INFO L124 PetriNetUnfolderBase]: 883/1576 cut-off events. [2024-06-27 19:56:50,130 INFO L125 PetriNetUnfolderBase]: For 186951/186951 co-relation queries the response was YES. [2024-06-27 19:56:50,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10636 conditions, 1576 events. 883/1576 cut-off events. For 186951/186951 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8818 event pairs, 101 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 10474. Up to 1267 conditions per place. [2024-06-27 19:56:50,148 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 261 selfloop transitions, 71 changer transitions 0/334 dead transitions. [2024-06-27 19:56:50,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 334 transitions, 3717 flow [2024-06-27 19:56:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:56:50,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:56:50,149 INFO L175 Difference]: Start difference. First operand has 344 places, 306 transitions, 2845 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:56:50,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 334 transitions, 3717 flow [2024-06-27 19:56:50,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 334 transitions, 3489 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 19:56:50,978 INFO L231 Difference]: Finished difference. Result has 344 places, 312 transitions, 2870 flow [2024-06-27 19:56:50,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2870, PETRI_PLACES=344, PETRI_TRANSITIONS=312} [2024-06-27 19:56:50,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:56:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 312 transitions, 2870 flow [2024-06-27 19:56:50,979 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 19:56:50,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:50,979 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 19:56:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:56:50,979 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 664759208, now seen corresponding path program 3 times [2024-06-27 19:56:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297572037] [2024-06-27 19:56:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:51,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297572037] [2024-06-27 19:56:51,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297572037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:51,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:51,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:51,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041193230] [2024-06-27 19:56:51,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:51,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:52,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:52,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 312 transitions, 2870 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 19:56:52,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:52,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:52,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:52,535 INFO L124 PetriNetUnfolderBase]: 887/1584 cut-off events. [2024-06-27 19:56:52,536 INFO L125 PetriNetUnfolderBase]: For 189473/189473 co-relation queries the response was YES. [2024-06-27 19:56:52,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10604 conditions, 1584 events. 887/1584 cut-off events. For 189473/189473 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8861 event pairs, 97 based on Foata normal form. 2/1585 useless extension candidates. Maximal degree in co-relation 10440. Up to 1275 conditions per place. [2024-06-27 19:56:52,554 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 265 selfloop transitions, 70 changer transitions 0/337 dead transitions. [2024-06-27 19:56:52,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 337 transitions, 3727 flow [2024-06-27 19:56:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:56:52,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 19:56:52,555 INFO L175 Difference]: Start difference. First operand has 344 places, 312 transitions, 2870 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:56:52,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 337 transitions, 3727 flow [2024-06-27 19:56:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 337 transitions, 3503 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:53,404 INFO L231 Difference]: Finished difference. Result has 350 places, 314 transitions, 2869 flow [2024-06-27 19:56:53,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2869, PETRI_PLACES=350, PETRI_TRANSITIONS=314} [2024-06-27 19:56:53,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-27 19:56:53,405 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 314 transitions, 2869 flow [2024-06-27 19:56:53,405 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 19:56:53,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:53,405 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 19:56:53,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:56:53,405 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:53,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:53,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2053916691, now seen corresponding path program 10 times [2024-06-27 19:56:53,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:53,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608381757] [2024-06-27 19:56:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:53,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:54,373 INFO 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 19:56:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:54,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608381757] [2024-06-27 19:56:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608381757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146207798] [2024-06-27 19:56:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:54,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:54,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:54,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 314 transitions, 2869 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 19:56:54,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:54,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:54,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:55,143 INFO L124 PetriNetUnfolderBase]: 911/1636 cut-off events. [2024-06-27 19:56:55,143 INFO L125 PetriNetUnfolderBase]: For 288832/288832 co-relation queries the response was YES. [2024-06-27 19:56:55,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 1636 events. 911/1636 cut-off events. For 288832/288832 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9268 event pairs, 91 based on Foata normal form. 14/1649 useless extension candidates. Maximal degree in co-relation 10819. Up to 1071 conditions per place. [2024-06-27 19:56:55,160 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 244 selfloop transitions, 92 changer transitions 11/349 dead transitions. [2024-06-27 19:56:55,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 349 transitions, 4043 flow [2024-06-27 19:56:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-27 19:56:55,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:56:55,161 INFO L175 Difference]: Start difference. First operand has 350 places, 314 transitions, 2869 flow. Second operand 12 states and 162 transitions. [2024-06-27 19:56:55,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 349 transitions, 4043 flow [2024-06-27 19:56:55,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 349 transitions, 3895 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:55,971 INFO L231 Difference]: Finished difference. Result has 354 places, 313 transitions, 2951 flow [2024-06-27 19:56:55,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2951, PETRI_PLACES=354, PETRI_TRANSITIONS=313} [2024-06-27 19:56:55,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-27 19:56:55,972 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 313 transitions, 2951 flow [2024-06-27 19:56:55,972 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 19:56:55,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:55,972 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 19:56:55,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:56:55,972 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:55,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash 753358222, now seen corresponding path program 7 times [2024-06-27 19:56:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:55,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794706466] [2024-06-27 19:56:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:55,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:56,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794706466] [2024-06-27 19:56:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794706466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:56,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:56,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018160373] [2024-06-27 19:56:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:56,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:57,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:57,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 313 transitions, 2951 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 19:56:57,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:57,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:57,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:57,576 INFO L124 PetriNetUnfolderBase]: 905/1626 cut-off events. [2024-06-27 19:56:57,577 INFO L125 PetriNetUnfolderBase]: For 198699/198699 co-relation queries the response was YES. [2024-06-27 19:56:57,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11097 conditions, 1626 events. 905/1626 cut-off events. For 198699/198699 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9182 event pairs, 79 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10930. Up to 1064 conditions per place. [2024-06-27 19:56:57,594 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 232 selfloop transitions, 107 changer transitions 4/345 dead transitions. [2024-06-27 19:56:57,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 345 transitions, 4315 flow [2024-06-27 19:56:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 19:56:57,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 19:56:57,595 INFO L175 Difference]: Start difference. First operand has 354 places, 313 transitions, 2951 flow. Second operand 12 states and 159 transitions. [2024-06-27 19:56:57,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 345 transitions, 4315 flow [2024-06-27 19:56:58,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 345 transitions, 4107 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 19:56:58,401 INFO L231 Difference]: Finished difference. Result has 356 places, 315 transitions, 3082 flow [2024-06-27 19:56:58,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3082, PETRI_PLACES=356, PETRI_TRANSITIONS=315} [2024-06-27 19:56:58,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-27 19:56:58,401 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 315 transitions, 3082 flow [2024-06-27 19:56:58,401 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 19:56:58,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:58,401 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 19:56:58,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:56:58,402 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:56:58,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 753214072, now seen corresponding path program 8 times [2024-06-27 19:56:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612635385] [2024-06-27 19:56:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612635385] [2024-06-27 19:56:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612635385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:59,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:59,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:56:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716505418] [2024-06-27 19:56:59,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:56:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:56:59,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:56:59,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:56:59,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 315 transitions, 3082 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 19:56:59,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:59,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:56:59,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:00,205 INFO L124 PetriNetUnfolderBase]: 921/1652 cut-off events. [2024-06-27 19:57:00,205 INFO L125 PetriNetUnfolderBase]: For 223507/223507 co-relation queries the response was YES. [2024-06-27 19:57:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11905 conditions, 1652 events. 921/1652 cut-off events. For 223507/223507 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9378 event pairs, 92 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 11737. Up to 1094 conditions per place. [2024-06-27 19:57:00,224 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 240 selfloop transitions, 105 changer transitions 6/353 dead transitions. [2024-06-27 19:57:00,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 353 transitions, 4610 flow [2024-06-27 19:57:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:57:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:57:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-27 19:57:00,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950892857142857 [2024-06-27 19:57:00,225 INFO L175 Difference]: Start difference. First operand has 356 places, 315 transitions, 3082 flow. Second operand 14 states and 177 transitions. [2024-06-27 19:57:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 353 transitions, 4610 flow [2024-06-27 19:57:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 353 transitions, 4348 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:01,043 INFO L231 Difference]: Finished difference. Result has 362 places, 319 transitions, 3288 flow [2024-06-27 19:57:01,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3288, PETRI_PLACES=362, PETRI_TRANSITIONS=319} [2024-06-27 19:57:01,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-27 19:57:01,044 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 319 transitions, 3288 flow [2024-06-27 19:57:01,044 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 19:57:01,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:01,044 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 19:57:01,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:57:01,044 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:01,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2054060841, now seen corresponding path program 11 times [2024-06-27 19:57:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:01,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097142501] [2024-06-27 19:57:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097142501] [2024-06-27 19:57:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097142501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:02,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:02,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807770398] [2024-06-27 19:57:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:02,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:02,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 319 transitions, 3288 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 19:57:02,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:02,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:02,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:02,830 INFO L124 PetriNetUnfolderBase]: 903/1614 cut-off events. [2024-06-27 19:57:02,830 INFO L125 PetriNetUnfolderBase]: For 225410/225410 co-relation queries the response was YES. [2024-06-27 19:57:02,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 1614 events. 903/1614 cut-off events. For 225410/225410 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9092 event pairs, 90 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 11517. Up to 1081 conditions per place. [2024-06-27 19:57:02,849 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 242 selfloop transitions, 103 changer transitions 1/348 dead transitions. [2024-06-27 19:57:02,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 348 transitions, 4284 flow [2024-06-27 19:57:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:57:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:57:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-27 19:57:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-27 19:57:02,850 INFO L175 Difference]: Start difference. First operand has 362 places, 319 transitions, 3288 flow. Second operand 13 states and 164 transitions. [2024-06-27 19:57:02,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 348 transitions, 4284 flow [2024-06-27 19:57:03,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 348 transitions, 4010 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:03,609 INFO L231 Difference]: Finished difference. Result has 365 places, 320 transitions, 3286 flow [2024-06-27 19:57:03,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3286, PETRI_PLACES=365, PETRI_TRANSITIONS=320} [2024-06-27 19:57:03,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-27 19:57:03,610 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 320 transitions, 3286 flow [2024-06-27 19:57:03,610 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 19:57:03,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:03,610 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 19:57:03,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:57:03,610 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:03,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2054064561, now seen corresponding path program 12 times [2024-06-27 19:57:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974858231] [2024-06-27 19:57:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:04,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974858231] [2024-06-27 19:57:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974858231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:04,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510908134] [2024-06-27 19:57:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:04,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:04,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:04,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:04,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 320 transitions, 3286 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 19:57:04,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:04,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:04,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:05,263 INFO L124 PetriNetUnfolderBase]: 914/1635 cut-off events. [2024-06-27 19:57:05,264 INFO L125 PetriNetUnfolderBase]: For 246843/246843 co-relation queries the response was YES. [2024-06-27 19:57:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12295 conditions, 1635 events. 914/1635 cut-off events. For 246843/246843 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9224 event pairs, 127 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 12123. Up to 1389 conditions per place. [2024-06-27 19:57:05,283 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 72 changer transitions 3/358 dead transitions. [2024-06-27 19:57:05,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 358 transitions, 4756 flow [2024-06-27 19:57:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 19:57:05,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-27 19:57:05,284 INFO L175 Difference]: Start difference. First operand has 365 places, 320 transitions, 3286 flow. Second operand 12 states and 146 transitions. [2024-06-27 19:57:05,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 358 transitions, 4756 flow [2024-06-27 19:57:06,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 358 transitions, 4464 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 19:57:06,164 INFO L231 Difference]: Finished difference. Result has 369 places, 332 transitions, 3558 flow [2024-06-27 19:57:06,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3558, PETRI_PLACES=369, PETRI_TRANSITIONS=332} [2024-06-27 19:57:06,164 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-27 19:57:06,164 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 332 transitions, 3558 flow [2024-06-27 19:57:06,164 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 19:57:06,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:06,164 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 19:57:06,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:57:06,164 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:06,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2048338830, now seen corresponding path program 4 times [2024-06-27 19:57:06,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:06,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146026297] [2024-06-27 19:57:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:06,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:07,290 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 19:57:07,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146026297] [2024-06-27 19:57:07,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146026297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:07,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:07,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:07,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693914551] [2024-06-27 19:57:07,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:07,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:07,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:07,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:07,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 332 transitions, 3558 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 19:57:07,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:07,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:08,025 INFO L124 PetriNetUnfolderBase]: 874/1551 cut-off events. [2024-06-27 19:57:08,025 INFO L125 PetriNetUnfolderBase]: For 239988/239988 co-relation queries the response was YES. [2024-06-27 19:57:08,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11646 conditions, 1551 events. 874/1551 cut-off events. For 239988/239988 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8665 event pairs, 79 based on Foata normal form. 2/1552 useless extension candidates. Maximal degree in co-relation 11470. Up to 1242 conditions per place. [2024-06-27 19:57:08,044 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 285 selfloop transitions, 69 changer transitions 0/356 dead transitions. [2024-06-27 19:57:08,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 356 transitions, 4403 flow [2024-06-27 19:57:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:57:08,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 19:57:08,046 INFO L175 Difference]: Start difference. First operand has 369 places, 332 transitions, 3558 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:57:08,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 356 transitions, 4403 flow [2024-06-27 19:57:08,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 356 transitions, 4053 flow, removed 152 selfloop flow, removed 6 redundant places. [2024-06-27 19:57:08,894 INFO L231 Difference]: Finished difference. Result has 374 places, 333 transitions, 3408 flow [2024-06-27 19:57:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=374, PETRI_TRANSITIONS=333} [2024-06-27 19:57:08,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:57:08,895 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 333 transitions, 3408 flow [2024-06-27 19:57:08,895 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 19:57:08,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:08,895 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 19:57:08,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:57:08,896 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:08,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2048554156, now seen corresponding path program 9 times [2024-06-27 19:57:08,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:08,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101153610] [2024-06-27 19:57:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:10,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101153610] [2024-06-27 19:57:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101153610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:10,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:10,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292012611] [2024-06-27 19:57:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:10,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:10,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:10,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 333 transitions, 3408 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 19:57:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:10,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:10,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:10,776 INFO L124 PetriNetUnfolderBase]: 880/1561 cut-off events. [2024-06-27 19:57:10,776 INFO L125 PetriNetUnfolderBase]: For 234575/234575 co-relation queries the response was YES. [2024-06-27 19:57:10,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11247 conditions, 1561 events. 880/1561 cut-off events. For 234575/234575 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8697 event pairs, 69 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 11071. Up to 1017 conditions per place. [2024-06-27 19:57:10,796 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 248 selfloop transitions, 113 changer transitions 0/363 dead transitions. [2024-06-27 19:57:10,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 363 transitions, 4595 flow [2024-06-27 19:57:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:57:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:57:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-27 19:57:10,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2024-06-27 19:57:10,797 INFO L175 Difference]: Start difference. First operand has 374 places, 333 transitions, 3408 flow. Second operand 13 states and 170 transitions. [2024-06-27 19:57:10,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 363 transitions, 4595 flow [2024-06-27 19:57:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 363 transitions, 4432 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:11,672 INFO L231 Difference]: Finished difference. Result has 377 places, 335 transitions, 3590 flow [2024-06-27 19:57:11,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3590, PETRI_PLACES=377, PETRI_TRANSITIONS=335} [2024-06-27 19:57:11,673 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 19:57:11,673 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 335 transitions, 3590 flow [2024-06-27 19:57:11,673 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 19:57:11,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:11,673 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 19:57:11,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:57:11,673 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:11,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 845425510, now seen corresponding path program 5 times [2024-06-27 19:57:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449743072] [2024-06-27 19:57:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:12,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:12,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449743072] [2024-06-27 19:57:12,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449743072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:12,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000439453] [2024-06-27 19:57:12,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:12,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:12,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 335 transitions, 3590 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 19:57:12,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:12,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:12,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:13,369 INFO L124 PetriNetUnfolderBase]: 884/1569 cut-off events. [2024-06-27 19:57:13,369 INFO L125 PetriNetUnfolderBase]: For 238902/238902 co-relation queries the response was YES. [2024-06-27 19:57:13,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11383 conditions, 1569 events. 884/1569 cut-off events. For 238902/238902 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8791 event pairs, 79 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 11207. Up to 1228 conditions per place. [2024-06-27 19:57:13,390 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 280 selfloop transitions, 76 changer transitions 0/358 dead transitions. [2024-06-27 19:57:13,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 358 transitions, 4391 flow [2024-06-27 19:57:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:57:13,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:57:13,391 INFO L175 Difference]: Start difference. First operand has 377 places, 335 transitions, 3590 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:57:13,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 358 transitions, 4391 flow [2024-06-27 19:57:14,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 358 transitions, 4133 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:14,140 INFO L231 Difference]: Finished difference. Result has 378 places, 336 transitions, 3504 flow [2024-06-27 19:57:14,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3504, PETRI_PLACES=378, PETRI_TRANSITIONS=336} [2024-06-27 19:57:14,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-27 19:57:14,141 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 336 transitions, 3504 flow [2024-06-27 19:57:14,141 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 19:57:14,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:14,142 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 19:57:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:57:14,142 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash 664543882, now seen corresponding path program 10 times [2024-06-27 19:57:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:14,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586327354] [2024-06-27 19:57:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:14,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:15,212 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 19:57:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586327354] [2024-06-27 19:57:15,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586327354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:15,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:15,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485897111] [2024-06-27 19:57:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:15,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:15,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:15,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 336 transitions, 3504 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 19:57:15,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:15,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:15,934 INFO L124 PetriNetUnfolderBase]: 886/1573 cut-off events. [2024-06-27 19:57:15,934 INFO L125 PetriNetUnfolderBase]: For 221540/221540 co-relation queries the response was YES. [2024-06-27 19:57:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10915 conditions, 1573 events. 886/1573 cut-off events. For 221540/221540 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8840 event pairs, 72 based on Foata normal form. 2/1574 useless extension candidates. Maximal degree in co-relation 10738. Up to 1070 conditions per place. [2024-06-27 19:57:15,965 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 105 changer transitions 0/365 dead transitions. [2024-06-27 19:57:15,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 365 transitions, 4337 flow [2024-06-27 19:57:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:57:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:57:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-27 19:57:15,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-27 19:57:15,967 INFO L175 Difference]: Start difference. First operand has 378 places, 336 transitions, 3504 flow. Second operand 13 states and 165 transitions. [2024-06-27 19:57:15,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 365 transitions, 4337 flow [2024-06-27 19:57:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 365 transitions, 4083 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:16,959 INFO L231 Difference]: Finished difference. Result has 383 places, 339 transitions, 3503 flow [2024-06-27 19:57:16,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3503, PETRI_PLACES=383, PETRI_TRANSITIONS=339} [2024-06-27 19:57:16,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-27 19:57:16,960 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 339 transitions, 3503 flow [2024-06-27 19:57:16,960 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 19:57:16,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:16,960 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 19:57:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:57:16,961 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:16,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1875306619, now seen corresponding path program 13 times [2024-06-27 19:57:16,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30807249] [2024-06-27 19:57:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30807249] [2024-06-27 19:57:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30807249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:18,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:18,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331254076] [2024-06-27 19:57:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:18,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:18,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:18,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 339 transitions, 3503 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 19:57:18,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:18,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:18,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:18,738 INFO L124 PetriNetUnfolderBase]: 910/1625 cut-off events. [2024-06-27 19:57:18,738 INFO L125 PetriNetUnfolderBase]: For 333921/333921 co-relation queries the response was YES. [2024-06-27 19:57:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 1625 events. 910/1625 cut-off events. For 333921/333921 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9196 event pairs, 84 based on Foata normal form. 14/1638 useless extension candidates. Maximal degree in co-relation 11123. Up to 1074 conditions per place. [2024-06-27 19:57:18,758 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 94 changer transitions 13/370 dead transitions. [2024-06-27 19:57:18,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 370 transitions, 4499 flow [2024-06-27 19:57:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-27 19:57:18,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-27 19:57:18,759 INFO L175 Difference]: Start difference. First operand has 383 places, 339 transitions, 3503 flow. Second operand 12 states and 163 transitions. [2024-06-27 19:57:18,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 370 transitions, 4499 flow [2024-06-27 19:57:19,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 370 transitions, 4258 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 19:57:19,594 INFO L231 Difference]: Finished difference. Result has 384 places, 334 transitions, 3449 flow [2024-06-27 19:57:19,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3449, PETRI_PLACES=384, PETRI_TRANSITIONS=334} [2024-06-27 19:57:19,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 19:57:19,595 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 334 transitions, 3449 flow [2024-06-27 19:57:19,595 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 19:57:19,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:19,595 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 19:57:19,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:57:19,595 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:19,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 664543727, now seen corresponding path program 14 times [2024-06-27 19:57:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977494110] [2024-06-27 19:57:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:20,498 INFO 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 19:57:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977494110] [2024-06-27 19:57:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977494110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:20,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733248952] [2024-06-27 19:57:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:20,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:20,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 334 transitions, 3449 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 19:57:20,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:20,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:21,220 INFO L124 PetriNetUnfolderBase]: 889/1594 cut-off events. [2024-06-27 19:57:21,220 INFO L125 PetriNetUnfolderBase]: For 319584/319584 co-relation queries the response was YES. [2024-06-27 19:57:21,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10808 conditions, 1594 events. 889/1594 cut-off events. For 319584/319584 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9042 event pairs, 79 based on Foata normal form. 14/1607 useless extension candidates. Maximal degree in co-relation 10628. Up to 1047 conditions per place. [2024-06-27 19:57:21,241 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 252 selfloop transitions, 93 changer transitions 16/363 dead transitions. [2024-06-27 19:57:21,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 363 transitions, 4385 flow [2024-06-27 19:57:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 19:57:21,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 19:57:21,242 INFO L175 Difference]: Start difference. First operand has 384 places, 334 transitions, 3449 flow. Second operand 12 states and 159 transitions. [2024-06-27 19:57:21,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 363 transitions, 4385 flow [2024-06-27 19:57:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 363 transitions, 4116 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-06-27 19:57:22,098 INFO L231 Difference]: Finished difference. Result has 384 places, 325 transitions, 3296 flow [2024-06-27 19:57:22,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3296, PETRI_PLACES=384, PETRI_TRANSITIONS=325} [2024-06-27 19:57:22,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 19:57:22,098 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 325 transitions, 3296 flow [2024-06-27 19:57:22,098 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 19:57:22,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:22,098 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 19:57:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:57:22,098 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:22,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash -183127337, now seen corresponding path program 15 times [2024-06-27 19:57:22,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:22,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760394314] [2024-06-27 19:57:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:22,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760394314] [2024-06-27 19:57:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760394314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:23,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924577340] [2024-06-27 19:57:23,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:23,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:23,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 325 transitions, 3296 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 19:57:23,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:23,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:23,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:23,875 INFO L124 PetriNetUnfolderBase]: 865/1562 cut-off events. [2024-06-27 19:57:23,876 INFO L125 PetriNetUnfolderBase]: For 323570/323570 co-relation queries the response was YES. [2024-06-27 19:57:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10590 conditions, 1562 events. 865/1562 cut-off events. For 323570/323570 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8840 event pairs, 83 based on Foata normal form. 14/1575 useless extension candidates. Maximal degree in co-relation 10411. Up to 1039 conditions per place. [2024-06-27 19:57:23,896 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 86 changer transitions 11/355 dead transitions. [2024-06-27 19:57:23,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 4298 flow [2024-06-27 19:57:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:57:23,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:57:23,898 INFO L175 Difference]: Start difference. First operand has 384 places, 325 transitions, 3296 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:57:23,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 4298 flow [2024-06-27 19:57:24,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 355 transitions, 4060 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-27 19:57:24,711 INFO L231 Difference]: Finished difference. Result has 380 places, 323 transitions, 3260 flow [2024-06-27 19:57:24,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3260, PETRI_PLACES=380, PETRI_TRANSITIONS=323} [2024-06-27 19:57:24,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:57:24,711 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 323 transitions, 3260 flow [2024-06-27 19:57:24,711 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 19:57:24,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:24,712 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 19:57:24,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:57:24,712 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1958935850, now seen corresponding path program 11 times [2024-06-27 19:57:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539464064] [2024-06-27 19:57:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:25,786 INFO 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 19:57:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539464064] [2024-06-27 19:57:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539464064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:25,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77229202] [2024-06-27 19:57:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:25,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:25,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:25,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 323 transitions, 3260 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 19:57:25,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:25,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:25,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:26,590 INFO L124 PetriNetUnfolderBase]: 839/1516 cut-off events. [2024-06-27 19:57:26,591 INFO L125 PetriNetUnfolderBase]: For 215525/215525 co-relation queries the response was YES. [2024-06-27 19:57:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10327 conditions, 1516 events. 839/1516 cut-off events. For 215525/215525 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8619 event pairs, 75 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 10149. Up to 1049 conditions per place. [2024-06-27 19:57:26,607 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 257 selfloop transitions, 87 changer transitions 4/350 dead transitions. [2024-06-27 19:57:26,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 350 transitions, 4182 flow [2024-06-27 19:57:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:57:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:57:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-27 19:57:26,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-27 19:57:26,608 INFO L175 Difference]: Start difference. First operand has 380 places, 323 transitions, 3260 flow. Second operand 13 states and 162 transitions. [2024-06-27 19:57:26,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 350 transitions, 4182 flow [2024-06-27 19:57:27,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 350 transitions, 3960 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:27,412 INFO L231 Difference]: Finished difference. Result has 384 places, 325 transitions, 3349 flow [2024-06-27 19:57:27,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3349, PETRI_PLACES=384, PETRI_TRANSITIONS=325} [2024-06-27 19:57:27,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 19:57:27,412 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 325 transitions, 3349 flow [2024-06-27 19:57:27,413 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 19:57:27,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:27,413 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 19:57:27,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:57:27,413 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:27,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1076945110, now seen corresponding path program 6 times [2024-06-27 19:57:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:27,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404120384] [2024-06-27 19:57:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:28,478 INFO 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 19:57:28,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404120384] [2024-06-27 19:57:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404120384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:28,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:28,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:28,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322625109] [2024-06-27 19:57:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 325 transitions, 3349 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 19:57:28,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:28,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:29,136 INFO L124 PetriNetUnfolderBase]: 847/1528 cut-off events. [2024-06-27 19:57:29,136 INFO L125 PetriNetUnfolderBase]: For 217480/217480 co-relation queries the response was YES. [2024-06-27 19:57:29,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10351 conditions, 1528 events. 847/1528 cut-off events. For 217480/217480 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8674 event pairs, 75 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10171. Up to 1215 conditions per place. [2024-06-27 19:57:29,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 73 changer transitions 1/350 dead transitions. [2024-06-27 19:57:29,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 350 transitions, 4175 flow [2024-06-27 19:57:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:57:29,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:57:29,156 INFO L175 Difference]: Start difference. First operand has 384 places, 325 transitions, 3349 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:57:29,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 350 transitions, 4175 flow [2024-06-27 19:57:29,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 350 transitions, 3880 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:29,932 INFO L231 Difference]: Finished difference. Result has 385 places, 331 transitions, 3300 flow [2024-06-27 19:57:29,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3300, PETRI_PLACES=385, PETRI_TRANSITIONS=331} [2024-06-27 19:57:29,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-27 19:57:29,933 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 331 transitions, 3300 flow [2024-06-27 19:57:29,933 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 19:57:29,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:29,933 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 19:57:29,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:57:29,934 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:29,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1757371804, now seen corresponding path program 7 times [2024-06-27 19:57:29,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312107277] [2024-06-27 19:57:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:29,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:31,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:31,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312107277] [2024-06-27 19:57:31,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312107277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:31,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:31,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:31,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275924647] [2024-06-27 19:57:31,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:31,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:31,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:31,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 331 transitions, 3300 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 19:57:31,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:31,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:31,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:31,585 INFO L124 PetriNetUnfolderBase]: 853/1538 cut-off events. [2024-06-27 19:57:31,585 INFO L125 PetriNetUnfolderBase]: For 217337/217337 co-relation queries the response was YES. [2024-06-27 19:57:31,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 1538 events. 853/1538 cut-off events. For 217337/217337 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8735 event pairs, 77 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10092. Up to 1221 conditions per place. [2024-06-27 19:57:31,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 285 selfloop transitions, 67 changer transitions 0/354 dead transitions. [2024-06-27 19:57:31,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 354 transitions, 4121 flow [2024-06-27 19:57:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:57:31,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 19:57:31,605 INFO L175 Difference]: Start difference. First operand has 385 places, 331 transitions, 3300 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:57:31,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 354 transitions, 4121 flow [2024-06-27 19:57:32,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 354 transitions, 3980 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 19:57:32,362 INFO L231 Difference]: Finished difference. Result has 391 places, 335 transitions, 3370 flow [2024-06-27 19:57:32,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3370, PETRI_PLACES=391, PETRI_TRANSITIONS=335} [2024-06-27 19:57:32,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-27 19:57:32,363 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 335 transitions, 3370 flow [2024-06-27 19:57:32,363 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 19:57:32,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:32,363 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 19:57:32,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:57:32,363 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:32,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1076954410, now seen corresponding path program 8 times [2024-06-27 19:57:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037487252] [2024-06-27 19:57:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:33,398 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 19:57:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:33,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037487252] [2024-06-27 19:57:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037487252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:33,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975169549] [2024-06-27 19:57:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:33,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:33,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:33,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 335 transitions, 3370 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 19:57:33,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:33,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:33,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:33,969 INFO L124 PetriNetUnfolderBase]: 857/1546 cut-off events. [2024-06-27 19:57:33,969 INFO L125 PetriNetUnfolderBase]: For 219902/219902 co-relation queries the response was YES. [2024-06-27 19:57:33,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10319 conditions, 1546 events. 857/1546 cut-off events. For 219902/219902 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8806 event pairs, 77 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 10135. Up to 1215 conditions per place. [2024-06-27 19:57:33,988 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 77 changer transitions 0/354 dead transitions. [2024-06-27 19:57:33,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 354 transitions, 4142 flow [2024-06-27 19:57:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:57:33,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 19:57:33,989 INFO L175 Difference]: Start difference. First operand has 391 places, 335 transitions, 3370 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:57:33,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 354 transitions, 4142 flow [2024-06-27 19:57:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 354 transitions, 4010 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:57:34,763 INFO L231 Difference]: Finished difference. Result has 396 places, 336 transitions, 3418 flow [2024-06-27 19:57:34,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3418, PETRI_PLACES=396, PETRI_TRANSITIONS=336} [2024-06-27 19:57:34,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-27 19:57:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 336 transitions, 3418 flow [2024-06-27 19:57:34,763 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 19:57:34,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:34,764 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 19:57:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:57:34,764 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:34,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash -182911856, now seen corresponding path program 9 times [2024-06-27 19:57:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844779991] [2024-06-27 19:57:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844779991] [2024-06-27 19:57:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844779991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:35,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823486676] [2024-06-27 19:57:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:36,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:36,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 336 transitions, 3418 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 19:57:36,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:36,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:36,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:36,672 INFO L124 PetriNetUnfolderBase]: 861/1554 cut-off events. [2024-06-27 19:57:36,672 INFO L125 PetriNetUnfolderBase]: For 223682/223682 co-relation queries the response was YES. [2024-06-27 19:57:36,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 1554 events. 861/1554 cut-off events. For 223682/223682 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8879 event pairs, 77 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 10226. Up to 1237 conditions per place. [2024-06-27 19:57:36,693 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 285 selfloop transitions, 70 changer transitions 0/357 dead transitions. [2024-06-27 19:57:36,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 357 transitions, 4219 flow [2024-06-27 19:57:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:57:36,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:57:36,694 INFO L175 Difference]: Start difference. First operand has 396 places, 336 transitions, 3418 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:57:36,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 357 transitions, 4219 flow [2024-06-27 19:57:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 357 transitions, 4047 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:37,493 INFO L231 Difference]: Finished difference. Result has 399 places, 338 transitions, 3434 flow [2024-06-27 19:57:37,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3434, PETRI_PLACES=399, PETRI_TRANSITIONS=338} [2024-06-27 19:57:37,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-27 19:57:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 338 transitions, 3434 flow [2024-06-27 19:57:37,494 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 19:57:37,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:37,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:57:37,494 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 811032504, now seen corresponding path program 12 times [2024-06-27 19:57:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782779519] [2024-06-27 19:57:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782779519] [2024-06-27 19:57:38,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782779519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591453326] [2024-06-27 19:57:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:38,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:38,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:38,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 338 transitions, 3434 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 19:57:38,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:38,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:38,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:39,286 INFO L124 PetriNetUnfolderBase]: 873/1574 cut-off events. [2024-06-27 19:57:39,287 INFO L125 PetriNetUnfolderBase]: For 229312/229312 co-relation queries the response was YES. [2024-06-27 19:57:39,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1574 events. 873/1574 cut-off events. For 229312/229312 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8998 event pairs, 83 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 10485. Up to 1089 conditions per place. [2024-06-27 19:57:39,307 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 265 selfloop transitions, 99 changer transitions 0/366 dead transitions. [2024-06-27 19:57:39,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 366 transitions, 4403 flow [2024-06-27 19:57:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:57:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:57:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-27 19:57:39,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-27 19:57:39,308 INFO L175 Difference]: Start difference. First operand has 399 places, 338 transitions, 3434 flow. Second operand 13 states and 163 transitions. [2024-06-27 19:57:39,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 366 transitions, 4403 flow [2024-06-27 19:57:40,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 366 transitions, 4245 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:57:40,197 INFO L231 Difference]: Finished difference. Result has 405 places, 343 transitions, 3665 flow [2024-06-27 19:57:40,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3665, PETRI_PLACES=405, PETRI_TRANSITIONS=343} [2024-06-27 19:57:40,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-27 19:57:40,198 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 343 transitions, 3665 flow [2024-06-27 19:57:40,198 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 19:57:40,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:40,198 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 19:57:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:57:40,198 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:40,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash 670827096, now seen corresponding path program 10 times [2024-06-27 19:57:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181211382] [2024-06-27 19:57:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:41,120 INFO 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 19:57:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181211382] [2024-06-27 19:57:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181211382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:41,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:41,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043914933] [2024-06-27 19:57:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:41,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:41,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:41,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 343 transitions, 3665 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 19:57:41,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:41,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:41,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:41,733 INFO L124 PetriNetUnfolderBase]: 884/1595 cut-off events. [2024-06-27 19:57:41,733 INFO L125 PetriNetUnfolderBase]: For 254325/254325 co-relation queries the response was YES. [2024-06-27 19:57:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 1595 events. 884/1595 cut-off events. For 254325/254325 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9164 event pairs, 80 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 11017. Up to 1249 conditions per place. [2024-06-27 19:57:41,751 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 71 changer transitions 0/365 dead transitions. [2024-06-27 19:57:41,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 365 transitions, 4785 flow [2024-06-27 19:57:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:57:41,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 19:57:41,752 INFO L175 Difference]: Start difference. First operand has 405 places, 343 transitions, 3665 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:57:41,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 365 transitions, 4785 flow [2024-06-27 19:57:42,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 365 transitions, 4452 flow, removed 70 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:42,663 INFO L231 Difference]: Finished difference. Result has 406 places, 345 transitions, 3528 flow [2024-06-27 19:57:42,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3528, PETRI_PLACES=406, PETRI_TRANSITIONS=345} [2024-06-27 19:57:42,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-27 19:57:42,664 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 345 transitions, 3528 flow [2024-06-27 19:57:42,664 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 19:57:42,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:42,664 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 19:57:42,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:57:42,664 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:42,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:42,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1441887088, now seen corresponding path program 11 times [2024-06-27 19:57:42,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:42,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372994977] [2024-06-27 19:57:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:42,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:43,732 INFO 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 19:57:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372994977] [2024-06-27 19:57:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372994977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720632955] [2024-06-27 19:57:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:43,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:43,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 345 transitions, 3528 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 19:57:43,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:43,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:44,356 INFO L124 PetriNetUnfolderBase]: 895/1616 cut-off events. [2024-06-27 19:57:44,356 INFO L125 PetriNetUnfolderBase]: For 276525/276525 co-relation queries the response was YES. [2024-06-27 19:57:44,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1616 events. 895/1616 cut-off events. For 276525/276525 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9332 event pairs, 83 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 11242. Up to 1171 conditions per place. [2024-06-27 19:57:44,372 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 89 changer transitions 0/366 dead transitions. [2024-06-27 19:57:44,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 366 transitions, 4650 flow [2024-06-27 19:57:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:57:44,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 19:57:44,373 INFO L175 Difference]: Start difference. First operand has 406 places, 345 transitions, 3528 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:57:44,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 366 transitions, 4650 flow [2024-06-27 19:57:45,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 366 transitions, 4544 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:45,264 INFO L231 Difference]: Finished difference. Result has 410 places, 347 transitions, 3658 flow [2024-06-27 19:57:45,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3658, PETRI_PLACES=410, PETRI_TRANSITIONS=347} [2024-06-27 19:57:45,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-27 19:57:45,265 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 347 transitions, 3658 flow [2024-06-27 19:57:45,265 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 19:57:45,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:45,265 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 19:57:45,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:57:45,266 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:45,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1964446255, now seen corresponding path program 16 times [2024-06-27 19:57:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646840508] [2024-06-27 19:57:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:46,163 INFO 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 19:57:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646840508] [2024-06-27 19:57:46,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646840508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:46,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:46,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:46,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254569812] [2024-06-27 19:57:46,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:46,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:46,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:46,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:46,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 347 transitions, 3658 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 19:57:46,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:46,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:46,924 INFO L124 PetriNetUnfolderBase]: 942/1709 cut-off events. [2024-06-27 19:57:46,924 INFO L125 PetriNetUnfolderBase]: For 434294/434294 co-relation queries the response was YES. [2024-06-27 19:57:46,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14566 conditions, 1709 events. 942/1709 cut-off events. For 434294/434294 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9915 event pairs, 98 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 14374. Up to 1066 conditions per place. [2024-06-27 19:57:46,947 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 265 selfloop transitions, 110 changer transitions 0/377 dead transitions. [2024-06-27 19:57:46,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 377 transitions, 5032 flow [2024-06-27 19:57:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:57:46,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:57:46,948 INFO L175 Difference]: Start difference. First operand has 410 places, 347 transitions, 3658 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:57:46,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 377 transitions, 5032 flow [2024-06-27 19:57:48,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 377 transitions, 4904 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:48,519 INFO L231 Difference]: Finished difference. Result has 415 places, 349 transitions, 3868 flow [2024-06-27 19:57:48,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3868, PETRI_PLACES=415, PETRI_TRANSITIONS=349} [2024-06-27 19:57:48,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-27 19:57:48,519 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 349 transitions, 3868 flow [2024-06-27 19:57:48,519 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 19:57:48,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:48,519 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 19:57:48,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:57:48,520 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:48,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 818657140, now seen corresponding path program 12 times [2024-06-27 19:57:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329736398] [2024-06-27 19:57:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329736398] [2024-06-27 19:57:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329736398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316051278] [2024-06-27 19:57:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:49,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:49,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 349 transitions, 3868 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 19:57:49,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:49,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:49,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:50,223 INFO L124 PetriNetUnfolderBase]: 952/1727 cut-off events. [2024-06-27 19:57:50,223 INFO L125 PetriNetUnfolderBase]: For 440229/440229 co-relation queries the response was YES. [2024-06-27 19:57:50,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14908 conditions, 1727 events. 952/1727 cut-off events. For 440229/440229 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10026 event pairs, 98 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 14714. Up to 1406 conditions per place. [2024-06-27 19:57:50,246 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 297 selfloop transitions, 72 changer transitions 0/371 dead transitions. [2024-06-27 19:57:50,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 371 transitions, 4716 flow [2024-06-27 19:57:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:57:50,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:57:50,247 INFO L175 Difference]: Start difference. First operand has 415 places, 349 transitions, 3868 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:57:50,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 371 transitions, 4716 flow [2024-06-27 19:57:51,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 371 transitions, 4506 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 19:57:51,833 INFO L231 Difference]: Finished difference. Result has 418 places, 352 transitions, 3864 flow [2024-06-27 19:57:51,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3864, PETRI_PLACES=418, PETRI_TRANSITIONS=352} [2024-06-27 19:57:51,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-27 19:57:51,833 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 352 transitions, 3864 flow [2024-06-27 19:57:51,833 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 19:57:51,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:51,834 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 19:57:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:57:51,834 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:51,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash 11027554, now seen corresponding path program 13 times [2024-06-27 19:57:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:51,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333483400] [2024-06-27 19:57:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:52,953 INFO 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 19:57:52,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333483400] [2024-06-27 19:57:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333483400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:52,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:52,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629865455] [2024-06-27 19:57:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:52,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:53,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:53,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 352 transitions, 3864 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 19:57:53,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:53,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:53,780 INFO L124 PetriNetUnfolderBase]: 949/1722 cut-off events. [2024-06-27 19:57:53,781 INFO L125 PetriNetUnfolderBase]: For 420838/420838 co-relation queries the response was YES. [2024-06-27 19:57:53,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14550 conditions, 1722 events. 949/1722 cut-off events. For 420838/420838 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10029 event pairs, 101 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 14354. Up to 1401 conditions per place. [2024-06-27 19:57:53,803 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 69 changer transitions 0/372 dead transitions. [2024-06-27 19:57:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 372 transitions, 4662 flow [2024-06-27 19:57:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 19:57:53,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 19:57:53,804 INFO L175 Difference]: Start difference. First operand has 418 places, 352 transitions, 3864 flow. Second operand 11 states and 141 transitions. [2024-06-27 19:57:53,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 372 transitions, 4662 flow [2024-06-27 19:57:55,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 372 transitions, 4462 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:57:55,341 INFO L231 Difference]: Finished difference. Result has 421 places, 352 transitions, 3806 flow [2024-06-27 19:57:55,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3664, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3806, PETRI_PLACES=421, PETRI_TRANSITIONS=352} [2024-06-27 19:57:55,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-27 19:57:55,342 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 352 transitions, 3806 flow [2024-06-27 19:57:55,342 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 19:57:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:55,342 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 19:57:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:57:55,342 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:55,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash 818666440, now seen corresponding path program 14 times [2024-06-27 19:57:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821817768] [2024-06-27 19:57:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:56,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:56,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821817768] [2024-06-27 19:57:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821817768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:56,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356266761] [2024-06-27 19:57:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:56,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:56,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 352 transitions, 3806 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 19:57:56,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:56,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:56,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:57,052 INFO L124 PetriNetUnfolderBase]: 953/1730 cut-off events. [2024-06-27 19:57:57,052 INFO L125 PetriNetUnfolderBase]: For 425279/425279 co-relation queries the response was YES. [2024-06-27 19:57:57,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14559 conditions, 1730 events. 953/1730 cut-off events. For 425279/425279 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10107 event pairs, 105 based on Foata normal form. 2/1731 useless extension candidates. Maximal degree in co-relation 14363. Up to 1386 conditions per place. [2024-06-27 19:57:57,071 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 297 selfloop transitions, 74 changer transitions 0/373 dead transitions. [2024-06-27 19:57:57,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 373 transitions, 4932 flow [2024-06-27 19:57:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:57:57,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 19:57:57,072 INFO L175 Difference]: Start difference. First operand has 421 places, 352 transitions, 3806 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:57:57,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 373 transitions, 4932 flow [2024-06-27 19:57:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 373 transitions, 4771 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:57:58,483 INFO L231 Difference]: Finished difference. Result has 421 places, 353 transitions, 3825 flow [2024-06-27 19:57:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3825, PETRI_PLACES=421, PETRI_TRANSITIONS=353} [2024-06-27 19:57:58,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-27 19:57:58,484 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 353 transitions, 3825 flow [2024-06-27 19:57:58,484 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 19:57:58,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:58,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:57:58,484 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:57:58,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1964442535, now seen corresponding path program 17 times [2024-06-27 19:57:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156803323] [2024-06-27 19:57:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:59,368 INFO 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 19:57:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156803323] [2024-06-27 19:57:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156803323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:59,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:57:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849438751] [2024-06-27 19:57:59,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:57:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:57:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:57:59,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:57:59,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 353 transitions, 3825 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 19:57:59,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:59,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:57:59,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:00,192 INFO L124 PetriNetUnfolderBase]: 977/1782 cut-off events. [2024-06-27 19:58:00,193 INFO L125 PetriNetUnfolderBase]: For 567813/567813 co-relation queries the response was YES. [2024-06-27 19:58:00,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15068 conditions, 1782 events. 977/1782 cut-off events. For 567813/567813 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10482 event pairs, 109 based on Foata normal form. 14/1795 useless extension candidates. Maximal degree in co-relation 14872. Up to 1204 conditions per place. [2024-06-27 19:58:00,218 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 108 changer transitions 11/384 dead transitions. [2024-06-27 19:58:00,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 384 transitions, 4880 flow [2024-06-27 19:58:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:58:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:58:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 172 transitions. [2024-06-27 19:58:00,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-27 19:58:00,220 INFO L175 Difference]: Start difference. First operand has 421 places, 353 transitions, 3825 flow. Second operand 13 states and 172 transitions. [2024-06-27 19:58:00,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 384 transitions, 4880 flow [2024-06-27 19:58:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 384 transitions, 4632 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 19:58:01,567 INFO L231 Difference]: Finished difference. Result has 424 places, 351 transitions, 3812 flow [2024-06-27 19:58:01,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3812, PETRI_PLACES=424, PETRI_TRANSITIONS=351} [2024-06-27 19:58:01,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2024-06-27 19:58:01,567 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 351 transitions, 3812 flow [2024-06-27 19:58:01,567 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 19:58:01,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:01,567 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 19:58:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:58:01,568 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:01,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -188633712, now seen corresponding path program 13 times [2024-06-27 19:58:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185739359] [2024-06-27 19:58:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:01,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185739359] [2024-06-27 19:58:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185739359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:02,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:02,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:02,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536269157] [2024-06-27 19:58:02,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:02,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:02,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:02,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 351 transitions, 3812 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 19:58:02,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:02,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:03,220 INFO L124 PetriNetUnfolderBase]: 961/1748 cut-off events. [2024-06-27 19:58:03,220 INFO L125 PetriNetUnfolderBase]: For 467594/467594 co-relation queries the response was YES. [2024-06-27 19:58:03,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15370 conditions, 1748 events. 961/1748 cut-off events. For 467594/467594 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10249 event pairs, 106 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 15174. Up to 1209 conditions per place. [2024-06-27 19:58:03,243 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 264 selfloop transitions, 112 changer transitions 3/381 dead transitions. [2024-06-27 19:58:03,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 381 transitions, 5233 flow [2024-06-27 19:58:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:58:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:58:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2024-06-27 19:58:03,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861607142857143 [2024-06-27 19:58:03,244 INFO L175 Difference]: Start difference. First operand has 424 places, 351 transitions, 3812 flow. Second operand 14 states and 173 transitions. [2024-06-27 19:58:03,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 381 transitions, 5233 flow [2024-06-27 19:58:04,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 381 transitions, 4976 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:04,857 INFO L231 Difference]: Finished difference. Result has 428 places, 355 transitions, 4057 flow [2024-06-27 19:58:04,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4057, PETRI_PLACES=428, PETRI_TRANSITIONS=355} [2024-06-27 19:58:04,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-27 19:58:04,858 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 355 transitions, 4057 flow [2024-06-27 19:58:04,858 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 19:58:04,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:04,858 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 19:58:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:58:04,858 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:04,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1764996440, now seen corresponding path program 14 times [2024-06-27 19:58:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858362298] [2024-06-27 19:58:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:05,940 INFO 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 19:58:05,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858362298] [2024-06-27 19:58:05,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858362298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:05,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:05,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:05,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299430873] [2024-06-27 19:58:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:05,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:06,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:06,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 355 transitions, 4057 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 19:58:06,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:06,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:06,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:06,699 INFO L124 PetriNetUnfolderBase]: 961/1746 cut-off events. [2024-06-27 19:58:06,699 INFO L125 PetriNetUnfolderBase]: For 449982/449982 co-relation queries the response was YES. [2024-06-27 19:58:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14998 conditions, 1746 events. 961/1746 cut-off events. For 449982/449982 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10230 event pairs, 107 based on Foata normal form. 2/1747 useless extension candidates. Maximal degree in co-relation 14800. Up to 1255 conditions per place. [2024-06-27 19:58:06,723 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 286 selfloop transitions, 93 changer transitions 0/381 dead transitions. [2024-06-27 19:58:06,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 381 transitions, 4918 flow [2024-06-27 19:58:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:58:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:58:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-27 19:58:06,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-27 19:58:06,724 INFO L175 Difference]: Start difference. First operand has 428 places, 355 transitions, 4057 flow. Second operand 13 states and 168 transitions. [2024-06-27 19:58:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 381 transitions, 4918 flow [2024-06-27 19:58:08,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 381 transitions, 4555 flow, removed 117 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:08,374 INFO L231 Difference]: Finished difference. Result has 431 places, 357 transitions, 3916 flow [2024-06-27 19:58:08,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3916, PETRI_PLACES=431, PETRI_TRANSITIONS=357} [2024-06-27 19:58:08,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-27 19:58:08,375 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 357 transitions, 3916 flow [2024-06-27 19:58:08,375 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 19:58:08,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:08,375 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 19:58:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:58:08,375 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 10812073, now seen corresponding path program 18 times [2024-06-27 19:58:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265756807] [2024-06-27 19:58:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:09,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:09,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265756807] [2024-06-27 19:58:09,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265756807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:09,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:09,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:09,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93763476] [2024-06-27 19:58:09,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:09,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:09,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:09,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 357 transitions, 3916 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 19:58:09,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:09,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:10,201 INFO L124 PetriNetUnfolderBase]: 985/1798 cut-off events. [2024-06-27 19:58:10,201 INFO L125 PetriNetUnfolderBase]: For 591685/591685 co-relation queries the response was YES. [2024-06-27 19:58:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15320 conditions, 1798 events. 985/1798 cut-off events. For 591685/591685 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10574 event pairs, 107 based on Foata normal form. 14/1811 useless extension candidates. Maximal degree in co-relation 15120. Up to 1253 conditions per place. [2024-06-27 19:58:10,226 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 284 selfloop transitions, 84 changer transitions 15/385 dead transitions. [2024-06-27 19:58:10,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 385 transitions, 4952 flow [2024-06-27 19:58:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-27 19:58:10,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:58:10,227 INFO L175 Difference]: Start difference. First operand has 431 places, 357 transitions, 3916 flow. Second operand 12 states and 162 transitions. [2024-06-27 19:58:10,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 385 transitions, 4952 flow [2024-06-27 19:58:11,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 385 transitions, 4668 flow, removed 21 selfloop flow, removed 16 redundant places. [2024-06-27 19:58:11,838 INFO L231 Difference]: Finished difference. Result has 427 places, 350 transitions, 3772 flow [2024-06-27 19:58:11,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3772, PETRI_PLACES=427, PETRI_TRANSITIONS=350} [2024-06-27 19:58:11,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-27 19:58:11,839 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 350 transitions, 3772 flow [2024-06-27 19:58:11,839 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 19:58:11,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:11,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:11,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:58:11,839 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:11,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:11,840 INFO L85 PathProgramCache]: Analyzing trace with hash 811247830, now seen corresponding path program 15 times [2024-06-27 19:58:11,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:11,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407763033] [2024-06-27 19:58:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:12,788 INFO 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 19:58:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:12,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407763033] [2024-06-27 19:58:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407763033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:12,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495635167] [2024-06-27 19:58:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:12,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:12,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:12,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:12,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 350 transitions, 3772 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 19:58:12,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:12,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:12,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:13,386 INFO L124 PetriNetUnfolderBase]: 934/1709 cut-off events. [2024-06-27 19:58:13,386 INFO L125 PetriNetUnfolderBase]: For 431215/431215 co-relation queries the response was YES. [2024-06-27 19:58:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 1709 events. 934/1709 cut-off events. For 431215/431215 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10042 event pairs, 96 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 14055. Up to 1388 conditions per place. [2024-06-27 19:58:13,408 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 71 changer transitions 0/369 dead transitions. [2024-06-27 19:58:13,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 369 transitions, 4560 flow [2024-06-27 19:58:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:58:13,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:58:13,409 INFO L175 Difference]: Start difference. First operand has 427 places, 350 transitions, 3772 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:58:13,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 369 transitions, 4560 flow [2024-06-27 19:58:14,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 369 transitions, 4328 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 19:58:14,933 INFO L231 Difference]: Finished difference. Result has 427 places, 350 transitions, 3686 flow [2024-06-27 19:58:14,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3686, PETRI_PLACES=427, PETRI_TRANSITIONS=350} [2024-06-27 19:58:14,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-27 19:58:14,933 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 350 transitions, 3686 flow [2024-06-27 19:58:14,933 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 19:58:14,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:14,933 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 19:58:14,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:58:14,933 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:14,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1708126279, now seen corresponding path program 19 times [2024-06-27 19:58:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:14,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266262896] [2024-06-27 19:58:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:15,949 INFO 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 19:58:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266262896] [2024-06-27 19:58:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266262896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:15,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230089231] [2024-06-27 19:58:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:16,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:16,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 350 transitions, 3686 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 19:58:16,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:16,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:16,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:16,663 INFO L124 PetriNetUnfolderBase]: 915/1676 cut-off events. [2024-06-27 19:58:16,663 INFO L125 PetriNetUnfolderBase]: For 410245/410245 co-relation queries the response was YES. [2024-06-27 19:58:16,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 1676 events. 915/1676 cut-off events. For 410245/410245 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9856 event pairs, 89 based on Foata normal form. 14/1689 useless extension candidates. Maximal degree in co-relation 11478. Up to 1149 conditions per place. [2024-06-27 19:58:16,686 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 87 changer transitions 16/376 dead transitions. [2024-06-27 19:58:16,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 376 transitions, 4650 flow [2024-06-27 19:58:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-27 19:58:16,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-27 19:58:16,687 INFO L175 Difference]: Start difference. First operand has 427 places, 350 transitions, 3686 flow. Second operand 12 states and 157 transitions. [2024-06-27 19:58:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 376 transitions, 4650 flow [2024-06-27 19:58:17,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 376 transitions, 4478 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:17,863 INFO L231 Difference]: Finished difference. Result has 428 places, 341 transitions, 3598 flow [2024-06-27 19:58:17,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3598, PETRI_PLACES=428, PETRI_TRANSITIONS=341} [2024-06-27 19:58:17,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-27 19:58:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 341 transitions, 3598 flow [2024-06-27 19:58:17,863 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 19:58:17,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:17,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:58:17,864 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:17,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1794413668, now seen corresponding path program 16 times [2024-06-27 19:58:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791191447] [2024-06-27 19:58:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:18,933 INFO 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 19:58:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791191447] [2024-06-27 19:58:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791191447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:18,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:18,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780940922] [2024-06-27 19:58:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 341 transitions, 3598 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 19:58:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:19,612 INFO L124 PetriNetUnfolderBase]: 873/1606 cut-off events. [2024-06-27 19:58:19,613 INFO L125 PetriNetUnfolderBase]: For 268330/268330 co-relation queries the response was YES. [2024-06-27 19:58:19,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 1606 events. 873/1606 cut-off events. For 268330/268330 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9470 event pairs, 97 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 10987. Up to 1539 conditions per place. [2024-06-27 19:58:19,634 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 334 selfloop transitions, 24 changer transitions 0/360 dead transitions. [2024-06-27 19:58:19,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 360 transitions, 4415 flow [2024-06-27 19:58:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:58:19,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:58:19,635 INFO L175 Difference]: Start difference. First operand has 428 places, 341 transitions, 3598 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:58:19,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 360 transitions, 4415 flow [2024-06-27 19:58:20,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 360 transitions, 4158 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 19:58:20,591 INFO L231 Difference]: Finished difference. Result has 427 places, 345 transitions, 3465 flow [2024-06-27 19:58:20,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3465, PETRI_PLACES=427, PETRI_TRANSITIONS=345} [2024-06-27 19:58:20,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-27 19:58:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 345 transitions, 3465 flow [2024-06-27 19:58:20,591 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 19:58:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:20,591 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 19:58:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:58:20,591 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1633716056, now seen corresponding path program 17 times [2024-06-27 19:58:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357438913] [2024-06-27 19:58:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:21,691 INFO 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 19:58:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:21,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357438913] [2024-06-27 19:58:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357438913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157881953] [2024-06-27 19:58:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:21,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:21,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 345 transitions, 3465 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 19:58:21,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:21,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:22,384 INFO L124 PetriNetUnfolderBase]: 883/1624 cut-off events. [2024-06-27 19:58:22,385 INFO L125 PetriNetUnfolderBase]: For 270674/270674 co-relation queries the response was YES. [2024-06-27 19:58:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1624 events. 883/1624 cut-off events. For 270674/270674 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9635 event pairs, 87 based on Foata normal form. 2/1625 useless extension candidates. Maximal degree in co-relation 10866. Up to 1470 conditions per place. [2024-06-27 19:58:22,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 319 selfloop transitions, 43 changer transitions 0/364 dead transitions. [2024-06-27 19:58:22,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 364 transitions, 4291 flow [2024-06-27 19:58:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:22,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:58:22,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:58:22,411 INFO L175 Difference]: Start difference. First operand has 427 places, 345 transitions, 3465 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:58:22,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 364 transitions, 4291 flow [2024-06-27 19:58:23,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 364 transitions, 4221 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:23,372 INFO L231 Difference]: Finished difference. Result has 431 places, 349 transitions, 3557 flow [2024-06-27 19:58:23,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3557, PETRI_PLACES=431, PETRI_TRANSITIONS=349} [2024-06-27 19:58:23,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-27 19:58:23,372 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 349 transitions, 3557 flow [2024-06-27 19:58:23,373 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 19:58:23,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:23,373 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 19:58:23,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:58:23,373 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:23,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1633725356, now seen corresponding path program 18 times [2024-06-27 19:58:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088636041] [2024-06-27 19:58:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:24,491 INFO 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 19:58:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088636041] [2024-06-27 19:58:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088636041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:24,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136719019] [2024-06-27 19:58:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:24,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:24,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:24,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:24,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 349 transitions, 3557 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 19:58:24,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:24,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:24,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:25,138 INFO L124 PetriNetUnfolderBase]: 894/1645 cut-off events. [2024-06-27 19:58:25,138 INFO L125 PetriNetUnfolderBase]: For 300259/300259 co-relation queries the response was YES. [2024-06-27 19:58:25,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11609 conditions, 1645 events. 894/1645 cut-off events. For 300259/300259 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9784 event pairs, 88 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 11409. Up to 1466 conditions per place. [2024-06-27 19:58:25,160 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 320 selfloop transitions, 45 changer transitions 0/367 dead transitions. [2024-06-27 19:58:25,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 367 transitions, 4707 flow [2024-06-27 19:58:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:58:25,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:58:25,161 INFO L175 Difference]: Start difference. First operand has 431 places, 349 transitions, 3557 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:58:25,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 367 transitions, 4707 flow [2024-06-27 19:58:26,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 367 transitions, 4606 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:26,293 INFO L231 Difference]: Finished difference. Result has 436 places, 351 transitions, 3612 flow [2024-06-27 19:58:26,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3612, PETRI_PLACES=436, PETRI_TRANSITIONS=351} [2024-06-27 19:58:26,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-27 19:58:26,294 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 351 transitions, 3612 flow [2024-06-27 19:58:26,294 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 19:58:26,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:26,294 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 19:58:26,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:58:26,294 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:26,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1626306746, now seen corresponding path program 19 times [2024-06-27 19:58:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463584977] [2024-06-27 19:58:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:27,455 INFO 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 19:58:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:27,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463584977] [2024-06-27 19:58:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463584977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:27,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098010386] [2024-06-27 19:58:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 351 transitions, 3612 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 19:58:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:27,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:27,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:28,215 INFO L124 PetriNetUnfolderBase]: 898/1653 cut-off events. [2024-06-27 19:58:28,215 INFO L125 PetriNetUnfolderBase]: For 304189/304189 co-relation queries the response was YES. [2024-06-27 19:58:28,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 1653 events. 898/1653 cut-off events. For 304189/304189 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9862 event pairs, 84 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 11474. Up to 1474 conditions per place. [2024-06-27 19:58:28,237 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 318 selfloop transitions, 49 changer transitions 0/369 dead transitions. [2024-06-27 19:58:28,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 369 transitions, 4434 flow [2024-06-27 19:58:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:58:28,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:58:28,238 INFO L175 Difference]: Start difference. First operand has 436 places, 351 transitions, 3612 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:58:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 369 transitions, 4434 flow [2024-06-27 19:58:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 369 transitions, 4342 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:29,345 INFO L231 Difference]: Finished difference. Result has 441 places, 353 transitions, 3676 flow [2024-06-27 19:58:29,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3676, PETRI_PLACES=441, PETRI_TRANSITIONS=353} [2024-06-27 19:58:29,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-27 19:58:29,346 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 353 transitions, 3676 flow [2024-06-27 19:58:29,346 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 19:58:29,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:29,346 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 19:58:29,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:58:29,346 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:29,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 173065674, now seen corresponding path program 20 times [2024-06-27 19:58:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609338147] [2024-06-27 19:58:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:29,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:30,495 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 19:58:30,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:30,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609338147] [2024-06-27 19:58:30,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609338147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:30,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:30,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056988917] [2024-06-27 19:58:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:30,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:30,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:30,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 353 transitions, 3676 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 19:58:30,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:30,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:30,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:31,370 INFO L124 PetriNetUnfolderBase]: 908/1671 cut-off events. [2024-06-27 19:58:31,370 INFO L125 PetriNetUnfolderBase]: For 308020/308020 co-relation queries the response was YES. [2024-06-27 19:58:31,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11882 conditions, 1671 events. 908/1671 cut-off events. For 308020/308020 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9977 event pairs, 92 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11678. Up to 1488 conditions per place. [2024-06-27 19:58:31,392 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 318 selfloop transitions, 51 changer transitions 0/371 dead transitions. [2024-06-27 19:58:31,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 371 transitions, 4517 flow [2024-06-27 19:58:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:58:31,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 19:58:31,393 INFO L175 Difference]: Start difference. First operand has 441 places, 353 transitions, 3676 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:58:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 371 transitions, 4517 flow [2024-06-27 19:58:32,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 371 transitions, 4395 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:32,520 INFO L231 Difference]: Finished difference. Result has 444 places, 356 transitions, 3725 flow [2024-06-27 19:58:32,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3725, PETRI_PLACES=444, PETRI_TRANSITIONS=356} [2024-06-27 19:58:32,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-27 19:58:32,521 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 356 transitions, 3725 flow [2024-06-27 19:58:32,521 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 19:58:32,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:32,521 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 19:58:32,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:58:32,522 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:32,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash 41392498, now seen corresponding path program 21 times [2024-06-27 19:58:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:32,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273466356] [2024-06-27 19:58:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:32,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:33,586 INFO 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 19:58:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273466356] [2024-06-27 19:58:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273466356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137378382] [2024-06-27 19:58:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:33,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:33,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 356 transitions, 3725 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 19:58:33,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:33,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:33,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:34,378 INFO L124 PetriNetUnfolderBase]: 918/1689 cut-off events. [2024-06-27 19:58:34,378 INFO L125 PetriNetUnfolderBase]: For 311896/311896 co-relation queries the response was YES. [2024-06-27 19:58:34,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12018 conditions, 1689 events. 918/1689 cut-off events. For 311896/311896 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10117 event pairs, 92 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 11813. Up to 1502 conditions per place. [2024-06-27 19:58:34,400 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 322 selfloop transitions, 51 changer transitions 0/375 dead transitions. [2024-06-27 19:58:34,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 375 transitions, 4580 flow [2024-06-27 19:58:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:58:34,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 19:58:34,401 INFO L175 Difference]: Start difference. First operand has 444 places, 356 transitions, 3725 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:58:34,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 375 transitions, 4580 flow [2024-06-27 19:58:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 375 transitions, 4466 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:35,567 INFO L231 Difference]: Finished difference. Result has 448 places, 359 transitions, 3784 flow [2024-06-27 19:58:35,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3784, PETRI_PLACES=448, PETRI_TRANSITIONS=359} [2024-06-27 19:58:35,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-27 19:58:35,568 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 359 transitions, 3784 flow [2024-06-27 19:58:35,568 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 19:58:35,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:35,569 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 19:58:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:58:35,569 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1760115524, now seen corresponding path program 15 times [2024-06-27 19:58:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192260610] [2024-06-27 19:58:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:36,437 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 19:58:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192260610] [2024-06-27 19:58:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192260610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:36,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135222818] [2024-06-27 19:58:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:36,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:36,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 359 transitions, 3784 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 19:58:36,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:36,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:36,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:37,203 INFO L124 PetriNetUnfolderBase]: 924/1699 cut-off events. [2024-06-27 19:58:37,203 INFO L125 PetriNetUnfolderBase]: For 318549/318549 co-relation queries the response was YES. [2024-06-27 19:58:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12209 conditions, 1699 events. 924/1699 cut-off events. For 318549/318549 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10159 event pairs, 78 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 12004. Up to 1397 conditions per place. [2024-06-27 19:58:37,226 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 308 selfloop transitions, 73 changer transitions 0/383 dead transitions. [2024-06-27 19:58:37,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 383 transitions, 5080 flow [2024-06-27 19:58:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:58:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:58:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-27 19:58:37,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-27 19:58:37,227 INFO L175 Difference]: Start difference. First operand has 448 places, 359 transitions, 3784 flow. Second operand 13 states and 155 transitions. [2024-06-27 19:58:37,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 383 transitions, 5080 flow [2024-06-27 19:58:38,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 383 transitions, 4941 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:38,565 INFO L231 Difference]: Finished difference. Result has 452 places, 361 transitions, 3936 flow [2024-06-27 19:58:38,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3936, PETRI_PLACES=452, PETRI_TRANSITIONS=361} [2024-06-27 19:58:38,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-27 19:58:38,566 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 361 transitions, 3936 flow [2024-06-27 19:58:38,566 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 19:58:38,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:38,566 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 19:58:38,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:58:38,566 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:38,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1727994540, now seen corresponding path program 22 times [2024-06-27 19:58:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692705881] [2024-06-27 19:58:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692705881] [2024-06-27 19:58:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692705881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915662433] [2024-06-27 19:58:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:39,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 361 transitions, 3936 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 19:58:39,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:39,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:39,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:40,665 INFO L124 PetriNetUnfolderBase]: 934/1717 cut-off events. [2024-06-27 19:58:40,665 INFO L125 PetriNetUnfolderBase]: For 322854/322854 co-relation queries the response was YES. [2024-06-27 19:58:40,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12385 conditions, 1717 events. 934/1717 cut-off events. For 322854/322854 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10300 event pairs, 102 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 12180. Up to 1621 conditions per place. [2024-06-27 19:58:40,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 30 changer transitions 0/379 dead transitions. [2024-06-27 19:58:40,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 379 transitions, 4795 flow [2024-06-27 19:58:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:58:40,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:58:40,690 INFO L175 Difference]: Start difference. First operand has 452 places, 361 transitions, 3936 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:58:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 379 transitions, 4795 flow [2024-06-27 19:58:42,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 379 transitions, 4417 flow, removed 67 selfloop flow, removed 12 redundant places. [2024-06-27 19:58:42,109 INFO L231 Difference]: Finished difference. Result has 451 places, 364 transitions, 3689 flow [2024-06-27 19:58:42,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3689, PETRI_PLACES=451, PETRI_TRANSITIONS=364} [2024-06-27 19:58:42,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-27 19:58:42,110 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 364 transitions, 3689 flow [2024-06-27 19:58:42,110 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 19:58:42,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:42,110 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 19:58:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:58:42,110 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:42,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1862009344, now seen corresponding path program 23 times [2024-06-27 19:58:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908309719] [2024-06-27 19:58:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908309719] [2024-06-27 19:58:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908309719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:43,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162946792] [2024-06-27 19:58:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:43,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:43,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 364 transitions, 3689 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 19:58:43,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:43,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:43,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:44,012 INFO L124 PetriNetUnfolderBase]: 938/1725 cut-off events. [2024-06-27 19:58:44,013 INFO L125 PetriNetUnfolderBase]: For 322534/322534 co-relation queries the response was YES. [2024-06-27 19:58:44,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12154 conditions, 1725 events. 938/1725 cut-off events. For 322534/322534 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10376 event pairs, 102 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 11948. Up to 1640 conditions per place. [2024-06-27 19:58:44,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 351 selfloop transitions, 26 changer transitions 0/379 dead transitions. [2024-06-27 19:58:44,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 379 transitions, 4515 flow [2024-06-27 19:58:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:58:44,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:58:44,037 INFO L175 Difference]: Start difference. First operand has 451 places, 364 transitions, 3689 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:58:44,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 379 transitions, 4515 flow [2024-06-27 19:58:45,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 379 transitions, 4429 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:45,244 INFO L231 Difference]: Finished difference. Result has 455 places, 365 transitions, 3699 flow [2024-06-27 19:58:45,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3603, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3699, PETRI_PLACES=455, PETRI_TRANSITIONS=365} [2024-06-27 19:58:45,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-27 19:58:45,244 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 365 transitions, 3699 flow [2024-06-27 19:58:45,244 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 19:58:45,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:45,244 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 19:58:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:58:45,244 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:45,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 65149579, now seen corresponding path program 20 times [2024-06-27 19:58:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108904357] [2024-06-27 19:58:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:46,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:46,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108904357] [2024-06-27 19:58:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108904357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:46,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838919] [2024-06-27 19:58:46,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:46,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:46,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 365 transitions, 3699 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 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 32 [2024-06-27 19:58:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:47,045 INFO L124 PetriNetUnfolderBase]: 962/1777 cut-off events. [2024-06-27 19:58:47,045 INFO L125 PetriNetUnfolderBase]: For 491522/491522 co-relation queries the response was YES. [2024-06-27 19:58:47,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12611 conditions, 1777 events. 962/1777 cut-off events. For 491522/491522 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10773 event pairs, 92 based on Foata normal form. 14/1790 useless extension candidates. Maximal degree in co-relation 12405. Up to 1464 conditions per place. [2024-06-27 19:58:47,069 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 323 selfloop transitions, 52 changer transitions 14/391 dead transitions. [2024-06-27 19:58:47,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 391 transitions, 4757 flow [2024-06-27 19:58:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:58:47,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:58:47,070 INFO L175 Difference]: Start difference. First operand has 455 places, 365 transitions, 3699 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:58:47,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 391 transitions, 4757 flow [2024-06-27 19:58:48,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 391 transitions, 4666 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:48,296 INFO L231 Difference]: Finished difference. Result has 458 places, 360 transitions, 3715 flow [2024-06-27 19:58:48,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3715, PETRI_PLACES=458, PETRI_TRANSITIONS=360} [2024-06-27 19:58:48,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 427 predicate places. [2024-06-27 19:58:48,296 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 360 transitions, 3715 flow [2024-06-27 19:58:48,296 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 19:58:48,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:48,296 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 19:58:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:58:48,297 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:48,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1432367336, now seen corresponding path program 24 times [2024-06-27 19:58:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:48,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923920957] [2024-06-27 19:58:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:49,363 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 19:58:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923920957] [2024-06-27 19:58:49,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923920957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:49,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:49,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:49,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492181976] [2024-06-27 19:58:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:49,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:49,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:49,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:49,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 360 transitions, 3715 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 19:58:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:49,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:49,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:50,137 INFO L124 PetriNetUnfolderBase]: 919/1704 cut-off events. [2024-06-27 19:58:50,137 INFO L125 PetriNetUnfolderBase]: For 302733/302733 co-relation queries the response was YES. [2024-06-27 19:58:50,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11711 conditions, 1704 events. 919/1704 cut-off events. For 302733/302733 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10347 event pairs, 81 based on Foata normal form. 2/1705 useless extension candidates. Maximal degree in co-relation 11504. Up to 1513 conditions per place. [2024-06-27 19:58:50,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 313 selfloop transitions, 60 changer transitions 0/375 dead transitions. [2024-06-27 19:58:50,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 375 transitions, 4501 flow [2024-06-27 19:58:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:58:50,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:58:50,162 INFO L175 Difference]: Start difference. First operand has 458 places, 360 transitions, 3715 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:58:50,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 375 transitions, 4501 flow [2024-06-27 19:58:51,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 375 transitions, 4323 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 19:58:51,313 INFO L231 Difference]: Finished difference. Result has 459 places, 360 transitions, 3661 flow [2024-06-27 19:58:51,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3661, PETRI_PLACES=459, PETRI_TRANSITIONS=360} [2024-06-27 19:58:51,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-27 19:58:51,314 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 360 transitions, 3661 flow [2024-06-27 19:58:51,314 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 19:58:51,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:51,314 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 19:58:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:58:51,314 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:51,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1566175959, now seen corresponding path program 21 times [2024-06-27 19:58:51,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:51,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663466517] [2024-06-27 19:58:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:51,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:52,322 INFO 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 19:58:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663466517] [2024-06-27 19:58:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663466517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:52,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:52,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004959554] [2024-06-27 19:58:52,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:52,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 360 transitions, 3661 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 19:58:52,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:52,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:53,102 INFO L124 PetriNetUnfolderBase]: 943/1756 cut-off events. [2024-06-27 19:58:53,102 INFO L125 PetriNetUnfolderBase]: For 473691/473691 co-relation queries the response was YES. [2024-06-27 19:58:53,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12137 conditions, 1756 events. 943/1756 cut-off events. For 473691/473691 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10695 event pairs, 85 based on Foata normal form. 14/1769 useless extension candidates. Maximal degree in co-relation 11929. Up to 1451 conditions per place. [2024-06-27 19:58:53,126 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 315 selfloop transitions, 56 changer transitions 13/386 dead transitions. [2024-06-27 19:58:53,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 386 transitions, 4711 flow [2024-06-27 19:58:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:58:53,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 19:58:53,127 INFO L175 Difference]: Start difference. First operand has 459 places, 360 transitions, 3661 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:58:53,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 386 transitions, 4711 flow [2024-06-27 19:58:54,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 386 transitions, 4568 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:54,270 INFO L231 Difference]: Finished difference. Result has 460 places, 356 transitions, 3648 flow [2024-06-27 19:58:54,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3648, PETRI_PLACES=460, PETRI_TRANSITIONS=356} [2024-06-27 19:58:54,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-27 19:58:54,271 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 356 transitions, 3648 flow [2024-06-27 19:58:54,271 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 19:58:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,271 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 19:58:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:58:54,271 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:54,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1560665709, now seen corresponding path program 22 times [2024-06-27 19:58:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768157762] [2024-06-27 19:58:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:55,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:55,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768157762] [2024-06-27 19:58:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768157762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374253951] [2024-06-27 19:58:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:55,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:55,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:55,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 356 transitions, 3648 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 19:58:55,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:55,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:55,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:55,981 INFO L124 PetriNetUnfolderBase]: 911/1700 cut-off events. [2024-06-27 19:58:55,981 INFO L125 PetriNetUnfolderBase]: For 310874/310874 co-relation queries the response was YES. [2024-06-27 19:58:55,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11740 conditions, 1700 events. 911/1700 cut-off events. For 310874/310874 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10389 event pairs, 103 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 11532. Up to 1570 conditions per place. [2024-06-27 19:58:56,002 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 315 selfloop transitions, 54 changer transitions 0/371 dead transitions. [2024-06-27 19:58:56,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 371 transitions, 4816 flow [2024-06-27 19:58:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:56,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:58:56,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:58:56,003 INFO L175 Difference]: Start difference. First operand has 460 places, 356 transitions, 3648 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:58:56,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 371 transitions, 4816 flow [2024-06-27 19:58:57,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 371 transitions, 4650 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 19:58:57,417 INFO L231 Difference]: Finished difference. Result has 462 places, 357 transitions, 3654 flow [2024-06-27 19:58:57,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3654, PETRI_PLACES=462, PETRI_TRANSITIONS=357} [2024-06-27 19:58:57,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-27 19:58:57,418 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 357 transitions, 3654 flow [2024-06-27 19:58:57,418 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 19:58:57,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:57,419 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 19:58:57,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 19:58:57,419 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:57,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1432152010, now seen corresponding path program 16 times [2024-06-27 19:58:57,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:57,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681170297] [2024-06-27 19:58:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681170297] [2024-06-27 19:58:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681170297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:58,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:58:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023115600] [2024-06-27 19:58:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:58:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:58,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:58:58,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:58:58,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:58:58,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 357 transitions, 3654 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 19:58:58,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:58,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:58:58,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:59,121 INFO L124 PetriNetUnfolderBase]: 917/1710 cut-off events. [2024-06-27 19:58:59,121 INFO L125 PetriNetUnfolderBase]: For 316152/316152 co-relation queries the response was YES. [2024-06-27 19:58:59,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11876 conditions, 1710 events. 917/1710 cut-off events. For 316152/316152 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10450 event pairs, 77 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 11667. Up to 1420 conditions per place. [2024-06-27 19:58:59,146 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 302 selfloop transitions, 74 changer transitions 2/380 dead transitions. [2024-06-27 19:58:59,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 380 transitions, 4962 flow [2024-06-27 19:58:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:58:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:58:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-27 19:58:59,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-27 19:58:59,147 INFO L175 Difference]: Start difference. First operand has 462 places, 357 transitions, 3654 flow. Second operand 13 states and 151 transitions. [2024-06-27 19:58:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 380 transitions, 4962 flow [2024-06-27 19:59:00,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 380 transitions, 4646 flow, removed 36 selfloop flow, removed 14 redundant places. [2024-06-27 19:59:00,515 INFO L231 Difference]: Finished difference. Result has 461 places, 359 transitions, 3641 flow [2024-06-27 19:59:00,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3641, PETRI_PLACES=461, PETRI_TRANSITIONS=359} [2024-06-27 19:59:00,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 19:59:00,516 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 359 transitions, 3641 flow [2024-06-27 19:59:00,516 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 19:59:00,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:00,516 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 19:59:00,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 19:59:00,516 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:00,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -812694092, now seen corresponding path program 25 times [2024-06-27 19:59:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:00,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660652046] [2024-06-27 19:59:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:01,647 INFO 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 19:59:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660652046] [2024-06-27 19:59:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660652046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013337662] [2024-06-27 19:59:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:01,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:01,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 359 transitions, 3641 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 19:59:01,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:01,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:01,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:02,328 INFO L124 PetriNetUnfolderBase]: 921/1718 cut-off events. [2024-06-27 19:59:02,328 INFO L125 PetriNetUnfolderBase]: For 318670/318670 co-relation queries the response was YES. [2024-06-27 19:59:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1718 events. 921/1718 cut-off events. For 318670/318670 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10528 event pairs, 97 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 11387. Up to 1538 conditions per place. [2024-06-27 19:59:02,352 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 325 selfloop transitions, 48 changer transitions 0/375 dead transitions. [2024-06-27 19:59:02,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 375 transitions, 4465 flow [2024-06-27 19:59:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:59:02,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 19:59:02,353 INFO L175 Difference]: Start difference. First operand has 461 places, 359 transitions, 3641 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:59:02,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 375 transitions, 4465 flow [2024-06-27 19:59:03,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 375 transitions, 4134 flow, removed 69 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:03,436 INFO L231 Difference]: Finished difference. Result has 460 places, 360 transitions, 3452 flow [2024-06-27 19:59:03,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3452, PETRI_PLACES=460, PETRI_TRANSITIONS=360} [2024-06-27 19:59:03,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-27 19:59:03,437 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 360 transitions, 3452 flow [2024-06-27 19:59:03,437 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 19:59:03,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:03,437 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 19:59:03,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 19:59:03,437 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1560813579, now seen corresponding path program 23 times [2024-06-27 19:59:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004195360] [2024-06-27 19:59:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:04,679 INFO 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 19:59:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004195360] [2024-06-27 19:59:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004195360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:04,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280946409] [2024-06-27 19:59:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:04,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:04,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 360 transitions, 3452 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 19:59:04,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:04,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:04,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:05,516 INFO L124 PetriNetUnfolderBase]: 945/1770 cut-off events. [2024-06-27 19:59:05,516 INFO L125 PetriNetUnfolderBase]: For 495152/495152 co-relation queries the response was YES. [2024-06-27 19:59:05,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11779 conditions, 1770 events. 945/1770 cut-off events. For 495152/495152 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10868 event pairs, 87 based on Foata normal form. 14/1783 useless extension candidates. Maximal degree in co-relation 11574. Up to 1469 conditions per place. [2024-06-27 19:59:05,541 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 308 selfloop transitions, 63 changer transitions 12/385 dead transitions. [2024-06-27 19:59:05,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 385 transitions, 4483 flow [2024-06-27 19:59:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 19:59:05,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-27 19:59:05,542 INFO L175 Difference]: Start difference. First operand has 460 places, 360 transitions, 3452 flow. Second operand 12 states and 146 transitions. [2024-06-27 19:59:05,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 385 transitions, 4483 flow [2024-06-27 19:59:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 385 transitions, 4351 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:06,795 INFO L231 Difference]: Finished difference. Result has 463 places, 357 transitions, 3467 flow [2024-06-27 19:59:06,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3467, PETRI_PLACES=463, PETRI_TRANSITIONS=357} [2024-06-27 19:59:06,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 432 predicate places. [2024-06-27 19:59:06,796 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 357 transitions, 3467 flow [2024-06-27 19:59:06,796 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 19:59:06,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:06,796 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 19:59:06,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 19:59:06,796 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:06,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1560813734, now seen corresponding path program 17 times [2024-06-27 19:59:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:06,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373415997] [2024-06-27 19:59:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:06,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:07,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373415997] [2024-06-27 19:59:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373415997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:07,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345197883] [2024-06-27 19:59:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:07,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 357 transitions, 3467 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 19:59:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:08,467 INFO L124 PetriNetUnfolderBase]: 919/1720 cut-off events. [2024-06-27 19:59:08,467 INFO L125 PetriNetUnfolderBase]: For 325768/325768 co-relation queries the response was YES. [2024-06-27 19:59:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11529 conditions, 1720 events. 919/1720 cut-off events. For 325768/325768 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10554 event pairs, 77 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 11323. Up to 1430 conditions per place. [2024-06-27 19:59:08,491 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 292 selfloop transitions, 82 changer transitions 2/378 dead transitions. [2024-06-27 19:59:08,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 378 transitions, 4765 flow [2024-06-27 19:59:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 19:59:08,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 19:59:08,496 INFO L175 Difference]: Start difference. First operand has 463 places, 357 transitions, 3467 flow. Second operand 12 states and 142 transitions. [2024-06-27 19:59:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 378 transitions, 4765 flow [2024-06-27 19:59:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 378 transitions, 4597 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:09,777 INFO L231 Difference]: Finished difference. Result has 465 places, 359 transitions, 3614 flow [2024-06-27 19:59:09,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3614, PETRI_PLACES=465, PETRI_TRANSITIONS=359} [2024-06-27 19:59:09,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 434 predicate places. [2024-06-27 19:59:09,777 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 359 transitions, 3614 flow [2024-06-27 19:59:09,777 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 19:59:09,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:09,778 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 19:59:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 19:59:09,778 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:09,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash 41177017, now seen corresponding path program 24 times [2024-06-27 19:59:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649998362] [2024-06-27 19:59:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:10,765 INFO 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 19:59:10,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:10,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649998362] [2024-06-27 19:59:10,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649998362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:10,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:10,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875758192] [2024-06-27 19:59:10,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:10,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:10,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:10,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 359 transitions, 3614 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 19:59:10,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:10,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:10,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:11,632 INFO L124 PetriNetUnfolderBase]: 943/1772 cut-off events. [2024-06-27 19:59:11,633 INFO L125 PetriNetUnfolderBase]: For 509778/509778 co-relation queries the response was YES. [2024-06-27 19:59:11,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12046 conditions, 1772 events. 943/1772 cut-off events. For 509778/509778 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10884 event pairs, 97 based on Foata normal form. 14/1785 useless extension candidates. Maximal degree in co-relation 11839. Up to 1471 conditions per place. [2024-06-27 19:59:11,654 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 322 selfloop transitions, 45 changer transitions 16/385 dead transitions. [2024-06-27 19:59:11,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 385 transitions, 4657 flow [2024-06-27 19:59:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 19:59:11,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 19:59:11,655 INFO L175 Difference]: Start difference. First operand has 465 places, 359 transitions, 3614 flow. Second operand 12 states and 149 transitions. [2024-06-27 19:59:11,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 385 transitions, 4657 flow [2024-06-27 19:59:13,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 385 transitions, 4383 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:13,249 INFO L231 Difference]: Finished difference. Result has 468 places, 353 transitions, 3414 flow [2024-06-27 19:59:13,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3414, PETRI_PLACES=468, PETRI_TRANSITIONS=353} [2024-06-27 19:59:13,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-27 19:59:13,250 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 353 transitions, 3414 flow [2024-06-27 19:59:13,250 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 19:59:13,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:13,250 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 19:59:13,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 19:59:13,250 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:13,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1426645325, now seen corresponding path program 25 times [2024-06-27 19:59:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:13,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359037409] [2024-06-27 19:59:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:14,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359037409] [2024-06-27 19:59:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359037409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:14,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:14,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:14,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292564920] [2024-06-27 19:59:14,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:14,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:14,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:14,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 353 transitions, 3414 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 19:59:14,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:14,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:14,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:15,069 INFO L124 PetriNetUnfolderBase]: 903/1708 cut-off events. [2024-06-27 19:59:15,069 INFO L125 PetriNetUnfolderBase]: For 331171/331171 co-relation queries the response was YES. [2024-06-27 19:59:15,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11329 conditions, 1708 events. 903/1708 cut-off events. For 331171/331171 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10620 event pairs, 83 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 11121. Up to 1447 conditions per place. [2024-06-27 19:59:15,093 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 73 changer transitions 2/374 dead transitions. [2024-06-27 19:59:15,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 374 transitions, 4267 flow [2024-06-27 19:59:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:59:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:59:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-27 19:59:15,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-27 19:59:15,094 INFO L175 Difference]: Start difference. First operand has 468 places, 353 transitions, 3414 flow. Second operand 13 states and 150 transitions. [2024-06-27 19:59:15,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 374 transitions, 4267 flow [2024-06-27 19:59:16,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 374 transitions, 4115 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:16,462 INFO L231 Difference]: Finished difference. Result has 470 places, 354 transitions, 3467 flow [2024-06-27 19:59:16,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3467, PETRI_PLACES=470, PETRI_TRANSITIONS=354} [2024-06-27 19:59:16,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-27 19:59:16,463 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 354 transitions, 3467 flow [2024-06-27 19:59:16,463 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 19:59:16,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:16,463 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 19:59:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 19:59:16,463 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:16,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1426645480, now seen corresponding path program 18 times [2024-06-27 19:59:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:16,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287117996] [2024-06-27 19:59:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:16,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:17,370 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 19:59:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287117996] [2024-06-27 19:59:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287117996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511270109] [2024-06-27 19:59:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:17,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:17,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 354 transitions, 3467 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 19:59:17,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:17,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:17,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:18,145 INFO L124 PetriNetUnfolderBase]: 919/1734 cut-off events. [2024-06-27 19:59:18,145 INFO L125 PetriNetUnfolderBase]: For 371657/371657 co-relation queries the response was YES. [2024-06-27 19:59:18,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12268 conditions, 1734 events. 919/1734 cut-off events. For 371657/371657 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10773 event pairs, 84 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 12060. Up to 1450 conditions per place. [2024-06-27 19:59:18,170 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 299 selfloop transitions, 75 changer transitions 0/376 dead transitions. [2024-06-27 19:59:18,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 376 transitions, 4911 flow [2024-06-27 19:59:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 19:59:18,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 19:59:18,171 INFO L175 Difference]: Start difference. First operand has 470 places, 354 transitions, 3467 flow. Second operand 12 states and 142 transitions. [2024-06-27 19:59:18,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 376 transitions, 4911 flow [2024-06-27 19:59:19,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 376 transitions, 4717 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:19,615 INFO L231 Difference]: Finished difference. Result has 471 places, 358 transitions, 3726 flow [2024-06-27 19:59:19,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3275, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3726, PETRI_PLACES=471, PETRI_TRANSITIONS=358} [2024-06-27 19:59:19,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-27 19:59:19,616 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 358 transitions, 3726 flow [2024-06-27 19:59:19,616 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 19:59:19,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:19,616 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 19:59:19,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 19:59:19,617 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:19,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash -92846932, now seen corresponding path program 19 times [2024-06-27 19:59:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960749628] [2024-06-27 19:59:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960749628] [2024-06-27 19:59:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960749628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:20,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494862170] [2024-06-27 19:59:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:20,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:20,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 358 transitions, 3726 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 19:59:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:21,285 INFO L124 PetriNetUnfolderBase]: 925/1744 cut-off events. [2024-06-27 19:59:21,285 INFO L125 PetriNetUnfolderBase]: For 375062/375062 co-relation queries the response was YES. [2024-06-27 19:59:21,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12457 conditions, 1744 events. 925/1744 cut-off events. For 375062/375062 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10842 event pairs, 95 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 12248. Up to 1466 conditions per place. [2024-06-27 19:59:21,310 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 317 selfloop transitions, 59 changer transitions 3/381 dead transitions. [2024-06-27 19:59:21,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 381 transitions, 5052 flow [2024-06-27 19:59:21,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:59:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:59:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-27 19:59:21,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-27 19:59:21,311 INFO L175 Difference]: Start difference. First operand has 471 places, 358 transitions, 3726 flow. Second operand 13 states and 153 transitions. [2024-06-27 19:59:21,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 381 transitions, 5052 flow [2024-06-27 19:59:22,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 381 transitions, 4789 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:22,538 INFO L231 Difference]: Finished difference. Result has 476 places, 360 transitions, 3740 flow [2024-06-27 19:59:22,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3740, PETRI_PLACES=476, PETRI_TRANSITIONS=360} [2024-06-27 19:59:22,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 445 predicate places. [2024-06-27 19:59:22,538 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 360 transitions, 3740 flow [2024-06-27 19:59:22,538 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 19:59:22,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:22,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:22,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 19:59:22,539 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:22,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash 307416208, now seen corresponding path program 26 times [2024-06-27 19:59:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:22,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93452109] [2024-06-27 19:59:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:22,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93452109] [2024-06-27 19:59:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93452109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:23,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:23,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3221157] [2024-06-27 19:59:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:23,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:23,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 360 transitions, 3740 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 19:59:23,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:23,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:23,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:24,311 INFO L124 PetriNetUnfolderBase]: 936/1765 cut-off events. [2024-06-27 19:59:24,311 INFO L125 PetriNetUnfolderBase]: For 407391/407391 co-relation queries the response was YES. [2024-06-27 19:59:24,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 1765 events. 936/1765 cut-off events. For 407391/407391 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10983 event pairs, 101 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 12653. Up to 1481 conditions per place. [2024-06-27 19:59:24,336 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 319 selfloop transitions, 57 changer transitions 0/378 dead transitions. [2024-06-27 19:59:24,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 378 transitions, 4970 flow [2024-06-27 19:59:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:59:24,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 19:59:24,337 INFO L175 Difference]: Start difference. First operand has 476 places, 360 transitions, 3740 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:59:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 378 transitions, 4970 flow [2024-06-27 19:59:25,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 378 transitions, 4759 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:25,827 INFO L231 Difference]: Finished difference. Result has 477 places, 362 transitions, 3733 flow [2024-06-27 19:59:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3733, PETRI_PLACES=477, PETRI_TRANSITIONS=362} [2024-06-27 19:59:25,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 446 predicate places. [2024-06-27 19:59:25,827 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 362 transitions, 3733 flow [2024-06-27 19:59:25,827 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 19:59:25,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:25,828 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 19:59:25,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 19:59:25,828 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:25,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 48801808, now seen corresponding path program 27 times [2024-06-27 19:59:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401321777] [2024-06-27 19:59:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:26,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401321777] [2024-06-27 19:59:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401321777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:26,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:26,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83150649] [2024-06-27 19:59:26,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:26,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:26,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:27,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:27,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 362 transitions, 3733 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 19:59:27,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:27,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:27,667 INFO L124 PetriNetUnfolderBase]: 940/1773 cut-off events. [2024-06-27 19:59:27,667 INFO L125 PetriNetUnfolderBase]: For 408970/408970 co-relation queries the response was YES. [2024-06-27 19:59:27,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12832 conditions, 1773 events. 940/1773 cut-off events. For 408970/408970 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11049 event pairs, 101 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 12620. Up to 1607 conditions per place. [2024-06-27 19:59:27,693 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 336 selfloop transitions, 41 changer transitions 0/379 dead transitions. [2024-06-27 19:59:27,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 379 transitions, 4575 flow [2024-06-27 19:59:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:59:27,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 19:59:27,694 INFO L175 Difference]: Start difference. First operand has 477 places, 362 transitions, 3733 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:59:27,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 379 transitions, 4575 flow [2024-06-27 19:59:29,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 379 transitions, 4463 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:29,157 INFO L231 Difference]: Finished difference. Result has 481 places, 363 transitions, 3753 flow [2024-06-27 19:59:29,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3753, PETRI_PLACES=481, PETRI_TRANSITIONS=363} [2024-06-27 19:59:29,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 450 predicate places. [2024-06-27 19:59:29,158 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 363 transitions, 3753 flow [2024-06-27 19:59:29,158 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 19:59:29,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:29,158 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 19:59:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 19:59:29,158 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:29,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 48811108, now seen corresponding path program 28 times [2024-06-27 19:59:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:29,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846747752] [2024-06-27 19:59:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:30,272 INFO 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 19:59:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:30,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846747752] [2024-06-27 19:59:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846747752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666552708] [2024-06-27 19:59:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:30,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:30,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 363 transitions, 3753 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 19:59:30,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:30,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:30,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:30,986 INFO L124 PetriNetUnfolderBase]: 937/1768 cut-off events. [2024-06-27 19:59:30,986 INFO L125 PetriNetUnfolderBase]: For 379990/379990 co-relation queries the response was YES. [2024-06-27 19:59:31,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12412 conditions, 1768 events. 937/1768 cut-off events. For 379990/379990 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11037 event pairs, 100 based on Foata normal form. 2/1769 useless extension candidates. Maximal degree in co-relation 12198. Up to 1582 conditions per place. [2024-06-27 19:59:31,011 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 334 selfloop transitions, 43 changer transitions 0/379 dead transitions. [2024-06-27 19:59:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 379 transitions, 4549 flow [2024-06-27 19:59:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:59:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:59:31,012 INFO L175 Difference]: Start difference. First operand has 481 places, 363 transitions, 3753 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:59:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 379 transitions, 4549 flow [2024-06-27 19:59:32,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 379 transitions, 4401 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:32,409 INFO L231 Difference]: Finished difference. Result has 484 places, 363 transitions, 3695 flow [2024-06-27 19:59:32,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3695, PETRI_PLACES=484, PETRI_TRANSITIONS=363} [2024-06-27 19:59:32,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 19:59:32,409 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 363 transitions, 3695 flow [2024-06-27 19:59:32,409 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 19:59:32,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:32,410 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 19:59:32,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 19:59:32,410 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:32,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1347776744, now seen corresponding path program 29 times [2024-06-27 19:59:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900319907] [2024-06-27 19:59:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:32,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:33,361 INFO 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 19:59:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900319907] [2024-06-27 19:59:33,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900319907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:33,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702277237] [2024-06-27 19:59:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:33,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:33,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:33,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 363 transitions, 3695 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 19:59:33,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:33,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:33,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:34,059 INFO L124 PetriNetUnfolderBase]: 941/1776 cut-off events. [2024-06-27 19:59:34,059 INFO L125 PetriNetUnfolderBase]: For 383533/383533 co-relation queries the response was YES. [2024-06-27 19:59:34,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 1776 events. 941/1776 cut-off events. For 383533/383533 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11081 event pairs, 102 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 12203. Up to 1726 conditions per place. [2024-06-27 19:59:34,091 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 359 selfloop transitions, 17 changer transitions 0/378 dead transitions. [2024-06-27 19:59:34,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 378 transitions, 4519 flow [2024-06-27 19:59:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:59:34,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:59:34,092 INFO L175 Difference]: Start difference. First operand has 484 places, 363 transitions, 3695 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:59:34,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 378 transitions, 4519 flow [2024-06-27 19:59:35,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 378 transitions, 4375 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:35,560 INFO L231 Difference]: Finished difference. Result has 484 places, 364 transitions, 3633 flow [2024-06-27 19:59:35,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3633, PETRI_PLACES=484, PETRI_TRANSITIONS=364} [2024-06-27 19:59:35,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 19:59:35,560 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 364 transitions, 3633 flow [2024-06-27 19:59:35,560 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 19:59:35,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:35,561 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 19:59:35,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 19:59:35,561 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:35,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1110576189, now seen corresponding path program 1 times [2024-06-27 19:59:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44221144] [2024-06-27 19:59:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:36,506 INFO 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 19:59:36,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:36,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44221144] [2024-06-27 19:59:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44221144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:36,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:36,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:36,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075703828] [2024-06-27 19:59:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:36,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:36,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:36,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 364 transitions, 3633 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 19:59:36,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:36,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:36,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:37,285 INFO L124 PetriNetUnfolderBase]: 939/1773 cut-off events. [2024-06-27 19:59:37,286 INFO L125 PetriNetUnfolderBase]: For 355420/355420 co-relation queries the response was YES. [2024-06-27 19:59:37,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12060 conditions, 1773 events. 939/1773 cut-off events. For 355420/355420 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11098 event pairs, 102 based on Foata normal form. 1/1773 useless extension candidates. Maximal degree in co-relation 11845. Up to 1711 conditions per place. [2024-06-27 19:59:37,306 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 348 selfloop transitions, 28 changer transitions 0/378 dead transitions. [2024-06-27 19:59:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 378 transitions, 4423 flow [2024-06-27 19:59:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:59:37,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:59:37,307 INFO L175 Difference]: Start difference. First operand has 484 places, 364 transitions, 3633 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:59:37,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 378 transitions, 4423 flow [2024-06-27 19:59:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 378 transitions, 4305 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:38,642 INFO L231 Difference]: Finished difference. Result has 486 places, 364 transitions, 3579 flow [2024-06-27 19:59:38,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3579, PETRI_PLACES=486, PETRI_TRANSITIONS=364} [2024-06-27 19:59:38,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 455 predicate places. [2024-06-27 19:59:38,643 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 364 transitions, 3579 flow [2024-06-27 19:59:38,643 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 19:59:38,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:38,643 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 19:59:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 19:59:38,643 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:38,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -910745230, now seen corresponding path program 30 times [2024-06-27 19:59:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485080400] [2024-06-27 19:59:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:39,783 INFO 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 19:59:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:39,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485080400] [2024-06-27 19:59:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485080400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:39,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057754916] [2024-06-27 19:59:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:39,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:39,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 364 transitions, 3579 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 19:59:39,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:39,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:40,630 INFO L124 PetriNetUnfolderBase]: 943/1781 cut-off events. [2024-06-27 19:59:40,630 INFO L125 PetriNetUnfolderBase]: For 374700/374700 co-relation queries the response was YES. [2024-06-27 19:59:40,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12092 conditions, 1781 events. 943/1781 cut-off events. For 374700/374700 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11159 event pairs, 106 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 11876. Up to 1722 conditions per place. [2024-06-27 19:59:40,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 352 selfloop transitions, 25 changer transitions 0/379 dead transitions. [2024-06-27 19:59:40,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 379 transitions, 4413 flow [2024-06-27 19:59:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:59:40,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:59:40,657 INFO L175 Difference]: Start difference. First operand has 486 places, 364 transitions, 3579 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:59:40,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 379 transitions, 4413 flow [2024-06-27 19:59:41,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 379 transitions, 4243 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:59:41,898 INFO L231 Difference]: Finished difference. Result has 484 places, 365 transitions, 3510 flow [2024-06-27 19:59:41,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3510, PETRI_PLACES=484, PETRI_TRANSITIONS=365} [2024-06-27 19:59:41,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 19:59:41,898 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 365 transitions, 3510 flow [2024-06-27 19:59:41,898 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 19:59:41,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:41,898 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 19:59:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 19:59:41,898 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:41,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1727668110, now seen corresponding path program 31 times [2024-06-27 19:59:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592714289] [2024-06-27 19:59:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:42,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592714289] [2024-06-27 19:59:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592714289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451513715] [2024-06-27 19:59:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:43,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:43,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 365 transitions, 3510 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 19:59:43,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:43,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:43,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:43,708 INFO L124 PetriNetUnfolderBase]: 954/1802 cut-off events. [2024-06-27 19:59:43,708 INFO L125 PetriNetUnfolderBase]: For 414004/414004 co-relation queries the response was YES. [2024-06-27 19:59:43,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 1802 events. 954/1802 cut-off events. For 414004/414004 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11318 event pairs, 106 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 12442. Up to 1670 conditions per place. [2024-06-27 19:59:43,735 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 351 selfloop transitions, 29 changer transitions 0/382 dead transitions. [2024-06-27 19:59:43,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 382 transitions, 4764 flow [2024-06-27 19:59:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:59:43,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:59:43,736 INFO L175 Difference]: Start difference. First operand has 484 places, 365 transitions, 3510 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:59:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 382 transitions, 4764 flow [2024-06-27 19:59:45,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 382 transitions, 4675 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:45,259 INFO L231 Difference]: Finished difference. Result has 486 places, 367 transitions, 3577 flow [2024-06-27 19:59:45,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3577, PETRI_PLACES=486, PETRI_TRANSITIONS=367} [2024-06-27 19:59:45,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 455 predicate places. [2024-06-27 19:59:45,260 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 367 transitions, 3577 flow [2024-06-27 19:59:45,260 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 19:59:45,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:45,260 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 19:59:45,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 19:59:45,260 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:45,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1986282510, now seen corresponding path program 32 times [2024-06-27 19:59:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:45,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602921030] [2024-06-27 19:59:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:46,345 INFO 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 19:59:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602921030] [2024-06-27 19:59:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602921030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:46,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:46,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638021273] [2024-06-27 19:59:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:46,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:46,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:46,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 367 transitions, 3577 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 19:59:46,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:46,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:46,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:47,147 INFO L124 PetriNetUnfolderBase]: 958/1810 cut-off events. [2024-06-27 19:59:47,147 INFO L125 PetriNetUnfolderBase]: For 418638/418638 co-relation queries the response was YES. [2024-06-27 19:59:47,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 1810 events. 958/1810 cut-off events. For 418638/418638 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11431 event pairs, 109 based on Foata normal form. 2/1811 useless extension candidates. Maximal degree in co-relation 12524. Up to 1739 conditions per place. [2024-06-27 19:59:47,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 356 selfloop transitions, 25 changer transitions 0/383 dead transitions. [2024-06-27 19:59:47,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 383 transitions, 4427 flow [2024-06-27 19:59:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:59:47,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:59:47,174 INFO L175 Difference]: Start difference. First operand has 486 places, 367 transitions, 3577 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:59:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 383 transitions, 4427 flow [2024-06-27 19:59:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 383 transitions, 4340 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:48,808 INFO L231 Difference]: Finished difference. Result has 490 places, 368 transitions, 3594 flow [2024-06-27 19:59:48,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3594, PETRI_PLACES=490, PETRI_TRANSITIONS=368} [2024-06-27 19:59:48,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-27 19:59:48,809 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 368 transitions, 3594 flow [2024-06-27 19:59:48,809 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 19:59:48,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:48,809 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 19:59:48,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 19:59:48,809 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:48,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1993907146, now seen corresponding path program 20 times [2024-06-27 19:59:48,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:48,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046109508] [2024-06-27 19:59:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:48,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046109508] [2024-06-27 19:59:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046109508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678940303] [2024-06-27 19:59:49,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:49,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:49,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 368 transitions, 3594 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 19:59:49,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:49,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:49,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:50,500 INFO L124 PetriNetUnfolderBase]: 954/1804 cut-off events. [2024-06-27 19:59:50,500 INFO L125 PetriNetUnfolderBase]: For 387208/387208 co-relation queries the response was YES. [2024-06-27 19:59:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12215 conditions, 1804 events. 954/1804 cut-off events. For 387208/387208 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11393 event pairs, 97 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 11995. Up to 1640 conditions per place. [2024-06-27 19:59:50,526 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 333 selfloop transitions, 54 changer transitions 1/390 dead transitions. [2024-06-27 19:59:50,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 390 transitions, 4948 flow [2024-06-27 19:59:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:59:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:59:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 19:59:50,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-27 19:59:50,527 INFO L175 Difference]: Start difference. First operand has 490 places, 368 transitions, 3594 flow. Second operand 13 states and 146 transitions. [2024-06-27 19:59:50,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 390 transitions, 4948 flow [2024-06-27 19:59:51,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 390 transitions, 4775 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:51,957 INFO L231 Difference]: Finished difference. Result has 496 places, 370 transitions, 3696 flow [2024-06-27 19:59:51,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3696, PETRI_PLACES=496, PETRI_TRANSITIONS=370} [2024-06-27 19:59:51,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 465 predicate places. [2024-06-27 19:59:51,957 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 370 transitions, 3696 flow [2024-06-27 19:59:51,957 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 19:59:51,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:51,957 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 19:59:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 19:59:51,958 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:51,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash -910735930, now seen corresponding path program 33 times [2024-06-27 19:59:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513202213] [2024-06-27 19:59:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513202213] [2024-06-27 19:59:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513202213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:53,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270311555] [2024-06-27 19:59:53,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:53,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:53,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:53,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 370 transitions, 3696 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 19:59:53,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:53,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:53,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:53,832 INFO L124 PetriNetUnfolderBase]: 966/1828 cut-off events. [2024-06-27 19:59:53,832 INFO L125 PetriNetUnfolderBase]: For 388698/388698 co-relation queries the response was YES. [2024-06-27 19:59:53,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12295 conditions, 1828 events. 966/1828 cut-off events. For 388698/388698 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11598 event pairs, 110 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 12073. Up to 1769 conditions per place. [2024-06-27 19:59:53,859 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 366 selfloop transitions, 19 changer transitions 0/387 dead transitions. [2024-06-27 19:59:53,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 387 transitions, 4555 flow [2024-06-27 19:59:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:59:53,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:59:53,860 INFO L175 Difference]: Start difference. First operand has 496 places, 370 transitions, 3696 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:59:53,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 387 transitions, 4555 flow [2024-06-27 19:59:55,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 387 transitions, 4376 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:55,271 INFO L231 Difference]: Finished difference. Result has 497 places, 373 transitions, 3624 flow [2024-06-27 19:59:55,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3624, PETRI_PLACES=497, PETRI_TRANSITIONS=373} [2024-06-27 19:59:55,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 466 predicate places. [2024-06-27 19:59:55,272 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 373 transitions, 3624 flow [2024-06-27 19:59:55,272 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 19:59:55,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:55,272 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 19:59:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 19:59:55,272 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1963156768, now seen corresponding path program 34 times [2024-06-27 19:59:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86049162] [2024-06-27 19:59:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:56,300 INFO 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 19:59:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86049162] [2024-06-27 19:59:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86049162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:56,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:56,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919639957] [2024-06-27 19:59:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:56,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:56,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:56,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:56,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 373 transitions, 3624 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 19:59:56,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:56,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:56,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:56,975 INFO L124 PetriNetUnfolderBase]: 963/1823 cut-off events. [2024-06-27 19:59:56,975 INFO L125 PetriNetUnfolderBase]: For 356467/356467 co-relation queries the response was YES. [2024-06-27 19:59:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11724 conditions, 1823 events. 963/1823 cut-off events. For 356467/356467 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11577 event pairs, 106 based on Foata normal form. 2/1824 useless extension candidates. Maximal degree in co-relation 11500. Up to 1732 conditions per place. [2024-06-27 19:59:57,002 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 359 selfloop transitions, 27 changer transitions 0/388 dead transitions. [2024-06-27 19:59:57,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 388 transitions, 4434 flow [2024-06-27 19:59:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:59:57,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:59:57,003 INFO L175 Difference]: Start difference. First operand has 497 places, 373 transitions, 3624 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:59:57,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 388 transitions, 4434 flow [2024-06-27 19:59:58,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 388 transitions, 4324 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:58,370 INFO L231 Difference]: Finished difference. Result has 500 places, 373 transitions, 3572 flow [2024-06-27 19:59:58,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3572, PETRI_PLACES=500, PETRI_TRANSITIONS=373} [2024-06-27 19:59:58,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2024-06-27 19:59:58,371 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 373 transitions, 3572 flow [2024-06-27 19:59:58,371 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 19:59:58,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:58,371 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 19:59:58,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 19:59:58,371 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:58,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1401296160, now seen corresponding path program 35 times [2024-06-27 19:59:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:58,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98427627] [2024-06-27 19:59:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:58,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98427627] [2024-06-27 19:59:59,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98427627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:59,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:59,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:59,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727525638] [2024-06-27 19:59:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:59,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:59,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:59,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:59,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:59:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 373 transitions, 3572 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 19:59:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:59:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:00,072 INFO L124 PetriNetUnfolderBase]: 967/1831 cut-off events. [2024-06-27 20:00:00,072 INFO L125 PetriNetUnfolderBase]: For 359505/359505 co-relation queries the response was YES. [2024-06-27 20:00:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 1831 events. 967/1831 cut-off events. For 359505/359505 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11621 event pairs, 109 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 11508. Up to 1740 conditions per place. [2024-06-27 20:00:00,099 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 358 selfloop transitions, 28 changer transitions 0/388 dead transitions. [2024-06-27 20:00:00,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 388 transitions, 4428 flow [2024-06-27 20:00:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:00:00,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 20:00:00,100 INFO L175 Difference]: Start difference. First operand has 500 places, 373 transitions, 3572 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:00:00,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 388 transitions, 4428 flow [2024-06-27 20:00:01,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 388 transitions, 4356 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:01,418 INFO L231 Difference]: Finished difference. Result has 501 places, 374 transitions, 3614 flow [2024-06-27 20:00:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3614, PETRI_PLACES=501, PETRI_TRANSITIONS=374} [2024-06-27 20:00:01,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 470 predicate places. [2024-06-27 20:00:01,418 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 374 transitions, 3614 flow [2024-06-27 20:00:01,418 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 20:00:01,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:01,418 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 20:00:01,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 20:00:01,418 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:01,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2004522580, now seen corresponding path program 21 times [2024-06-27 20:00:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72417726] [2024-06-27 20:00:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72417726] [2024-06-27 20:00:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72417726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:02,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268340868] [2024-06-27 20:00:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:02,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:02,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 374 transitions, 3614 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 20:00:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:03,374 INFO L124 PetriNetUnfolderBase]: 963/1825 cut-off events. [2024-06-27 20:00:03,374 INFO L125 PetriNetUnfolderBase]: For 327347/327347 co-relation queries the response was YES. [2024-06-27 20:00:03,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11252 conditions, 1825 events. 963/1825 cut-off events. For 327347/327347 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11587 event pairs, 110 based on Foata normal form. 2/1826 useless extension candidates. Maximal degree in co-relation 11026. Up to 1753 conditions per place. [2024-06-27 20:00:03,401 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 358 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2024-06-27 20:00:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 390 transitions, 4434 flow [2024-06-27 20:00:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 20:00:03,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-27 20:00:03,402 INFO L175 Difference]: Start difference. First operand has 501 places, 374 transitions, 3614 flow. Second operand 12 states and 130 transitions. [2024-06-27 20:00:03,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 390 transitions, 4434 flow [2024-06-27 20:00:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 390 transitions, 4214 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:04,995 INFO L231 Difference]: Finished difference. Result has 504 places, 374 transitions, 3460 flow [2024-06-27 20:00:04,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3460, PETRI_PLACES=504, PETRI_TRANSITIONS=374} [2024-06-27 20:00:04,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 473 predicate places. [2024-06-27 20:00:04,995 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 374 transitions, 3460 flow [2024-06-27 20:00:04,995 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 20:00:04,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:04,995 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 20:00:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 20:00:04,996 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:04,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -739680974, now seen corresponding path program 36 times [2024-06-27 20:00:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075076964] [2024-06-27 20:00:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:06,015 INFO 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 20:00:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:06,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075076964] [2024-06-27 20:00:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075076964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:06,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521527339] [2024-06-27 20:00:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:06,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:06,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:06,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 374 transitions, 3460 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 20:00:06,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:06,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:06,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:06,832 INFO L124 PetriNetUnfolderBase]: 960/1820 cut-off events. [2024-06-27 20:00:06,832 INFO L125 PetriNetUnfolderBase]: For 287675/287675 co-relation queries the response was YES. [2024-06-27 20:00:06,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10549 conditions, 1820 events. 960/1820 cut-off events. For 287675/287675 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11548 event pairs, 111 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 10322. Up to 1705 conditions per place. [2024-06-27 20:00:06,857 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 358 selfloop transitions, 28 changer transitions 0/388 dead transitions. [2024-06-27 20:00:06,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 388 transitions, 4264 flow [2024-06-27 20:00:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 20:00:06,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:00:06,858 INFO L175 Difference]: Start difference. First operand has 504 places, 374 transitions, 3460 flow. Second operand 12 states and 128 transitions. [2024-06-27 20:00:06,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 388 transitions, 4264 flow [2024-06-27 20:00:08,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 388 transitions, 4190 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:08,453 INFO L231 Difference]: Finished difference. Result has 505 places, 374 transitions, 3446 flow [2024-06-27 20:00:08,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3446, PETRI_PLACES=505, PETRI_TRANSITIONS=374} [2024-06-27 20:00:08,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 20:00:08,454 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 374 transitions, 3446 flow [2024-06-27 20:00:08,454 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 20:00:08,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:08,454 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 20:00:08,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 20:00:08,454 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:08,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1970790859, now seen corresponding path program 26 times [2024-06-27 20:00:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975319567] [2024-06-27 20:00:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975319567] [2024-06-27 20:00:09,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975319567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:09,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:09,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918223463] [2024-06-27 20:00:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:09,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:09,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 374 transitions, 3446 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 20:00:09,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:09,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:10,112 INFO L124 PetriNetUnfolderBase]: 977/1859 cut-off events. [2024-06-27 20:00:10,112 INFO L125 PetriNetUnfolderBase]: For 468576/468576 co-relation queries the response was YES. [2024-06-27 20:00:10,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10523 conditions, 1859 events. 977/1859 cut-off events. For 468576/468576 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11810 event pairs, 110 based on Foata normal form. 14/1872 useless extension candidates. Maximal degree in co-relation 10295. Up to 1704 conditions per place. [2024-06-27 20:00:10,139 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 354 selfloop transitions, 25 changer transitions 16/397 dead transitions. [2024-06-27 20:00:10,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 397 transitions, 4460 flow [2024-06-27 20:00:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:00:10,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:00:10,140 INFO L175 Difference]: Start difference. First operand has 505 places, 374 transitions, 3446 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:00:10,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 397 transitions, 4460 flow [2024-06-27 20:00:11,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 397 transitions, 4126 flow, removed 44 selfloop flow, removed 14 redundant places. [2024-06-27 20:00:11,807 INFO L231 Difference]: Finished difference. Result has 503 places, 366 transitions, 3101 flow [2024-06-27 20:00:11,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3101, PETRI_PLACES=503, PETRI_TRANSITIONS=366} [2024-06-27 20:00:11,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-27 20:00:11,807 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 366 transitions, 3101 flow [2024-06-27 20:00:11,807 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 20:00:11,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:11,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:11,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 20:00:11,807 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:11,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1388111830, now seen corresponding path program 1 times [2024-06-27 20:00:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:11,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299014416] [2024-06-27 20:00:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:12,845 INFO 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 20:00:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299014416] [2024-06-27 20:00:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299014416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101332682] [2024-06-27 20:00:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:13,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:13,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 366 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:13,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:13,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:13,820 INFO L124 PetriNetUnfolderBase]: 964/1844 cut-off events. [2024-06-27 20:00:13,820 INFO L125 PetriNetUnfolderBase]: For 538479/538479 co-relation queries the response was YES. [2024-06-27 20:00:13,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11978 conditions, 1844 events. 964/1844 cut-off events. For 538479/538479 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11662 event pairs, 127 based on Foata normal form. 8/1851 useless extension candidates. Maximal degree in co-relation 11752. Up to 1559 conditions per place. [2024-06-27 20:00:13,849 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 363 selfloop transitions, 26 changer transitions 16/407 dead transitions. [2024-06-27 20:00:13,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 407 transitions, 4627 flow [2024-06-27 20:00:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:00:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:00:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-27 20:00:13,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37723214285714285 [2024-06-27 20:00:13,850 INFO L175 Difference]: Start difference. First operand has 503 places, 366 transitions, 3101 flow. Second operand 14 states and 169 transitions. [2024-06-27 20:00:13,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 407 transitions, 4627 flow [2024-06-27 20:00:15,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 407 transitions, 4339 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-27 20:00:15,882 INFO L231 Difference]: Finished difference. Result has 500 places, 362 transitions, 2854 flow [2024-06-27 20:00:15,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2854, PETRI_PLACES=500, PETRI_TRANSITIONS=362} [2024-06-27 20:00:15,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2024-06-27 20:00:15,883 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 362 transitions, 2854 flow [2024-06-27 20:00:15,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:15,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:15,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 20:00:15,883 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:15,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1729699218, now seen corresponding path program 2 times [2024-06-27 20:00:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683998711] [2024-06-27 20:00:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683998711] [2024-06-27 20:00:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683998711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834148587] [2024-06-27 20:00:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:17,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:17,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 362 transitions, 2854 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:17,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:17,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:17,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:17,908 INFO L124 PetriNetUnfolderBase]: 1031/1971 cut-off events. [2024-06-27 20:00:17,908 INFO L125 PetriNetUnfolderBase]: For 717719/717719 co-relation queries the response was YES. [2024-06-27 20:00:17,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14511 conditions, 1971 events. 1031/1971 cut-off events. For 717719/717719 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12486 event pairs, 167 based on Foata normal form. 8/1978 useless extension candidates. Maximal degree in co-relation 14287. Up to 1793 conditions per place. [2024-06-27 20:00:17,938 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 384 selfloop transitions, 28 changer transitions 7/421 dead transitions. [2024-06-27 20:00:17,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 421 transitions, 4589 flow [2024-06-27 20:00:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 20:00:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 20:00:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 167 transitions. [2024-06-27 20:00:17,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34791666666666665 [2024-06-27 20:00:17,940 INFO L175 Difference]: Start difference. First operand has 500 places, 362 transitions, 2854 flow. Second operand 15 states and 167 transitions. [2024-06-27 20:00:17,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 421 transitions, 4589 flow [2024-06-27 20:00:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 421 transitions, 4501 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 20:00:20,946 INFO L231 Difference]: Finished difference. Result has 505 places, 384 transitions, 3095 flow [2024-06-27 20:00:20,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3095, PETRI_PLACES=505, PETRI_TRANSITIONS=384} [2024-06-27 20:00:20,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 20:00:20,946 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 384 transitions, 3095 flow [2024-06-27 20:00:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:20,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:20,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:20,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 20:00:20,947 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:20,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1329899410, now seen corresponding path program 3 times [2024-06-27 20:00:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:20,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049041650] [2024-06-27 20:00:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:22,052 INFO 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 20:00:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049041650] [2024-06-27 20:00:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049041650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:22,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:22,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143897007] [2024-06-27 20:00:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:22,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:22,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:22,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 384 transitions, 3095 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:22,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:22,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:22,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:22,942 INFO L124 PetriNetUnfolderBase]: 1016/1944 cut-off events. [2024-06-27 20:00:22,943 INFO L125 PetriNetUnfolderBase]: For 733339/733342 co-relation queries the response was YES. [2024-06-27 20:00:22,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12588 conditions, 1944 events. 1016/1944 cut-off events. For 733339/733342 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12326 event pairs, 135 based on Foata normal form. 22/1965 useless extension candidates. Maximal degree in co-relation 12358. Up to 1706 conditions per place. [2024-06-27 20:00:22,973 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 355 selfloop transitions, 45 changer transitions 14/416 dead transitions. [2024-06-27 20:00:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 416 transitions, 4157 flow [2024-06-27 20:00:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:00:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:00:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-27 20:00:22,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 20:00:22,974 INFO L175 Difference]: Start difference. First operand has 505 places, 384 transitions, 3095 flow. Second operand 14 states and 161 transitions. [2024-06-27 20:00:22,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 416 transitions, 4157 flow [2024-06-27 20:00:24,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 416 transitions, 4129 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:24,597 INFO L231 Difference]: Finished difference. Result has 512 places, 378 transitions, 3112 flow [2024-06-27 20:00:24,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3112, PETRI_PLACES=512, PETRI_TRANSITIONS=378} [2024-06-27 20:00:24,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-27 20:00:24,598 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 378 transitions, 3112 flow [2024-06-27 20:00:24,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:24,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:24,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:24,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 20:00:24,598 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:24,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1330019380, now seen corresponding path program 4 times [2024-06-27 20:00:24,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:24,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371581615] [2024-06-27 20:00:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:24,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:25,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:25,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371581615] [2024-06-27 20:00:25,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371581615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:25,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:25,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783357011] [2024-06-27 20:00:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:25,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:25,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 378 transitions, 3112 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:25,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:25,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:25,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:26,546 INFO L124 PetriNetUnfolderBase]: 1009/1935 cut-off events. [2024-06-27 20:00:26,546 INFO L125 PetriNetUnfolderBase]: For 656662/656665 co-relation queries the response was YES. [2024-06-27 20:00:26,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13871 conditions, 1935 events. 1009/1935 cut-off events. For 656662/656665 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12241 event pairs, 143 based on Foata normal form. 10/1944 useless extension candidates. Maximal degree in co-relation 13642. Up to 1692 conditions per place. [2024-06-27 20:00:26,578 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 361 selfloop transitions, 40 changer transitions 13/416 dead transitions. [2024-06-27 20:00:26,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 416 transitions, 4565 flow [2024-06-27 20:00:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:00:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:00:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-06-27 20:00:26,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 20:00:26,579 INFO L175 Difference]: Start difference. First operand has 512 places, 378 transitions, 3112 flow. Second operand 14 states and 164 transitions. [2024-06-27 20:00:26,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 416 transitions, 4565 flow [2024-06-27 20:00:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 416 transitions, 4465 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 20:00:29,026 INFO L231 Difference]: Finished difference. Result has 509 places, 374 transitions, 3058 flow [2024-06-27 20:00:29,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3058, PETRI_PLACES=509, PETRI_TRANSITIONS=374} [2024-06-27 20:00:29,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-27 20:00:29,026 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 374 transitions, 3058 flow [2024-06-27 20:00:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:29,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:29,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 20:00:29,027 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:29,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1362015350, now seen corresponding path program 5 times [2024-06-27 20:00:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852468771] [2024-06-27 20:00:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852468771] [2024-06-27 20:00:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852468771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:30,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798200776] [2024-06-27 20:00:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:30,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:30,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 374 transitions, 3058 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:30,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:30,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:30,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:30,975 INFO L124 PetriNetUnfolderBase]: 998/1915 cut-off events. [2024-06-27 20:00:30,975 INFO L125 PetriNetUnfolderBase]: For 687604/687607 co-relation queries the response was YES. [2024-06-27 20:00:31,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 1915 events. 998/1915 cut-off events. For 687604/687607 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12093 event pairs, 149 based on Foata normal form. 12/1926 useless extension candidates. Maximal degree in co-relation 13652. Up to 1775 conditions per place. [2024-06-27 20:00:31,006 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 362 selfloop transitions, 27 changer transitions 13/404 dead transitions. [2024-06-27 20:00:31,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 404 transitions, 4090 flow [2024-06-27 20:00:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:00:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:00:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-27 20:00:31,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-27 20:00:31,007 INFO L175 Difference]: Start difference. First operand has 509 places, 374 transitions, 3058 flow. Second operand 13 states and 148 transitions. [2024-06-27 20:00:31,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 404 transitions, 4090 flow [2024-06-27 20:00:33,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 404 transitions, 4000 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 20:00:33,578 INFO L231 Difference]: Finished difference. Result has 505 places, 369 transitions, 2987 flow [2024-06-27 20:00:33,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2987, PETRI_PLACES=505, PETRI_TRANSITIONS=369} [2024-06-27 20:00:33,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 20:00:33,579 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 369 transitions, 2987 flow [2024-06-27 20:00:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:33,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:33,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 20:00:33,579 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:33,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1362010700, now seen corresponding path program 6 times [2024-06-27 20:00:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:33,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975875969] [2024-06-27 20:00:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:34,659 INFO 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 20:00:34,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:34,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975875969] [2024-06-27 20:00:34,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975875969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:34,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:34,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399413446] [2024-06-27 20:00:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:34,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:34,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:34,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 369 transitions, 2987 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:34,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:34,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:34,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:35,522 INFO L124 PetriNetUnfolderBase]: 982/1893 cut-off events. [2024-06-27 20:00:35,522 INFO L125 PetriNetUnfolderBase]: For 649400/649400 co-relation queries the response was YES. [2024-06-27 20:00:35,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13586 conditions, 1893 events. 982/1893 cut-off events. For 649400/649400 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11993 event pairs, 178 based on Foata normal form. 8/1900 useless extension candidates. Maximal degree in co-relation 13360. Up to 1815 conditions per place. [2024-06-27 20:00:35,551 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 363 selfloop transitions, 14 changer transitions 13/392 dead transitions. [2024-06-27 20:00:35,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 392 transitions, 3902 flow [2024-06-27 20:00:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:00:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:00:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-27 20:00:35,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293269230769231 [2024-06-27 20:00:35,552 INFO L175 Difference]: Start difference. First operand has 505 places, 369 transitions, 2987 flow. Second operand 13 states and 137 transitions. [2024-06-27 20:00:35,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 392 transitions, 3902 flow [2024-06-27 20:00:37,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 392 transitions, 3842 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:37,794 INFO L231 Difference]: Finished difference. Result has 505 places, 367 transitions, 2941 flow [2024-06-27 20:00:37,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2941, PETRI_PLACES=505, PETRI_TRANSITIONS=367} [2024-06-27 20:00:37,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 20:00:37,795 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 367 transitions, 2941 flow [2024-06-27 20:00:37,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:37,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:37,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 20:00:37,795 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:37,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 483686050, now seen corresponding path program 7 times [2024-06-27 20:00:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28602656] [2024-06-27 20:00:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28602656] [2024-06-27 20:00:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28602656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:39,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:39,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943282275] [2024-06-27 20:00:39,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:39,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:39,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:39,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:39,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 367 transitions, 2941 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:39,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:39,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:39,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:39,947 INFO L124 PetriNetUnfolderBase]: 974/1875 cut-off events. [2024-06-27 20:00:39,947 INFO L125 PetriNetUnfolderBase]: For 643086/643089 co-relation queries the response was YES. [2024-06-27 20:00:39,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13458 conditions, 1875 events. 974/1875 cut-off events. For 643086/643089 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11809 event pairs, 143 based on Foata normal form. 10/1884 useless extension candidates. Maximal degree in co-relation 13231. Up to 1636 conditions per place. [2024-06-27 20:00:39,976 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 360 selfloop transitions, 30 changer transitions 11/403 dead transitions. [2024-06-27 20:00:39,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 403 transitions, 4431 flow [2024-06-27 20:00:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:00:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:00:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-27 20:00:39,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:00:39,977 INFO L175 Difference]: Start difference. First operand has 505 places, 367 transitions, 2941 flow. Second operand 13 states and 156 transitions. [2024-06-27 20:00:39,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 403 transitions, 4431 flow [2024-06-27 20:00:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 403 transitions, 4393 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:42,158 INFO L231 Difference]: Finished difference. Result has 504 places, 363 transitions, 2940 flow [2024-06-27 20:00:42,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2940, PETRI_PLACES=504, PETRI_TRANSITIONS=363} [2024-06-27 20:00:42,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 473 predicate places. [2024-06-27 20:00:42,159 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 363 transitions, 2940 flow [2024-06-27 20:00:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:42,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:42,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 20:00:42,159 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2142048190, now seen corresponding path program 8 times [2024-06-27 20:00:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471703827] [2024-06-27 20:00:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:43,315 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 20:00:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471703827] [2024-06-27 20:00:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471703827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:43,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220529536] [2024-06-27 20:00:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:43,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:43,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 363 transitions, 2940 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:43,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:43,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:44,326 INFO L124 PetriNetUnfolderBase]: 962/1855 cut-off events. [2024-06-27 20:00:44,326 INFO L125 PetriNetUnfolderBase]: For 643218/643221 co-relation queries the response was YES. [2024-06-27 20:00:44,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13430 conditions, 1855 events. 962/1855 cut-off events. For 643218/643221 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11670 event pairs, 137 based on Foata normal form. 10/1864 useless extension candidates. Maximal degree in co-relation 13204. Up to 1636 conditions per place. [2024-06-27 20:00:44,349 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 357 selfloop transitions, 27 changer transitions 13/399 dead transitions. [2024-06-27 20:00:44,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 399 transitions, 4422 flow [2024-06-27 20:00:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:00:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:00:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-27 20:00:44,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 20:00:44,350 INFO L175 Difference]: Start difference. First operand has 504 places, 363 transitions, 2940 flow. Second operand 14 states and 161 transitions. [2024-06-27 20:00:44,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 399 transitions, 4422 flow [2024-06-27 20:00:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 399 transitions, 4357 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:46,387 INFO L231 Difference]: Finished difference. Result has 502 places, 356 transitions, 2884 flow [2024-06-27 20:00:46,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2884, PETRI_PLACES=502, PETRI_TRANSITIONS=356} [2024-06-27 20:00:46,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-27 20:00:46,388 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 356 transitions, 2884 flow [2024-06-27 20:00:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:46,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:46,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 20:00:46,389 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1357546700, now seen corresponding path program 9 times [2024-06-27 20:00:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889502639] [2024-06-27 20:00:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:46,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:47,434 INFO 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 20:00:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:47,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889502639] [2024-06-27 20:00:47,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889502639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309024520] [2024-06-27 20:00:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:47,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:47,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:47,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 356 transitions, 2884 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:47,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:47,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:48,351 INFO L124 PetriNetUnfolderBase]: 921/1776 cut-off events. [2024-06-27 20:00:48,351 INFO L125 PetriNetUnfolderBase]: For 498852/498855 co-relation queries the response was YES. [2024-06-27 20:00:48,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1776 events. 921/1776 cut-off events. For 498852/498855 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11133 event pairs, 128 based on Foata normal form. 12/1787 useless extension candidates. Maximal degree in co-relation 10796. Up to 1636 conditions per place. [2024-06-27 20:00:48,376 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 345 selfloop transitions, 17 changer transitions 22/386 dead transitions. [2024-06-27 20:00:48,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 386 transitions, 3880 flow [2024-06-27 20:00:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:00:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:00:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 20:00:48,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-27 20:00:48,377 INFO L175 Difference]: Start difference. First operand has 502 places, 356 transitions, 2884 flow. Second operand 13 states and 146 transitions. [2024-06-27 20:00:48,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 386 transitions, 3880 flow [2024-06-27 20:00:49,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 386 transitions, 3814 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-27 20:00:49,942 INFO L231 Difference]: Finished difference. Result has 494 places, 345 transitions, 2754 flow [2024-06-27 20:00:49,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2754, PETRI_PLACES=494, PETRI_TRANSITIONS=345} [2024-06-27 20:00:49,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 463 predicate places. [2024-06-27 20:00:49,943 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 345 transitions, 2754 flow [2024-06-27 20:00:49,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:49,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:49,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 20:00:49,943 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:49,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 89134042, now seen corresponding path program 1 times [2024-06-27 20:00:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613039669] [2024-06-27 20:00:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:51,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613039669] [2024-06-27 20:00:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613039669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339468662] [2024-06-27 20:00:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:51,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:51,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 345 transitions, 2754 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:51,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:51,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:51,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:51,648 INFO L124 PetriNetUnfolderBase]: 885/1701 cut-off events. [2024-06-27 20:00:51,648 INFO L125 PetriNetUnfolderBase]: For 354495/354498 co-relation queries the response was YES. [2024-06-27 20:00:51,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10352 conditions, 1701 events. 885/1701 cut-off events. For 354495/354498 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10555 event pairs, 102 based on Foata normal form. 4/1704 useless extension candidates. Maximal degree in co-relation 10143. Up to 1270 conditions per place. [2024-06-27 20:00:51,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 94 changer transitions 0/372 dead transitions. [2024-06-27 20:00:51,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 372 transitions, 3580 flow [2024-06-27 20:00:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:00:51,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:00:51,673 INFO L175 Difference]: Start difference. First operand has 494 places, 345 transitions, 2754 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:00:51,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 372 transitions, 3580 flow [2024-06-27 20:00:53,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 372 transitions, 3526 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:53,208 INFO L231 Difference]: Finished difference. Result has 480 places, 346 transitions, 2906 flow [2024-06-27 20:00:53,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2906, PETRI_PLACES=480, PETRI_TRANSITIONS=346} [2024-06-27 20:00:53,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-27 20:00:53,208 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 346 transitions, 2906 flow [2024-06-27 20:00:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:53,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:53,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 20:00:53,209 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:53,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 653913804, now seen corresponding path program 10 times [2024-06-27 20:00:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166039937] [2024-06-27 20:00:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166039937] [2024-06-27 20:00:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166039937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615673316] [2024-06-27 20:00:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:54,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:54,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 346 transitions, 2906 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:54,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:55,445 INFO L124 PetriNetUnfolderBase]: 1026/1986 cut-off events. [2024-06-27 20:00:55,446 INFO L125 PetriNetUnfolderBase]: For 466876/466876 co-relation queries the response was YES. [2024-06-27 20:00:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11942 conditions, 1986 events. 1026/1986 cut-off events. For 466876/466876 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12816 event pairs, 205 based on Foata normal form. 10/1995 useless extension candidates. Maximal degree in co-relation 11737. Up to 1555 conditions per place. [2024-06-27 20:00:55,489 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 339 selfloop transitions, 90 changer transitions 11/442 dead transitions. [2024-06-27 20:00:55,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 442 transitions, 4636 flow [2024-06-27 20:00:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:00:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:00:55,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 165 transitions. [2024-06-27 20:00:55,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36830357142857145 [2024-06-27 20:00:55,491 INFO L175 Difference]: Start difference. First operand has 480 places, 346 transitions, 2906 flow. Second operand 14 states and 165 transitions. [2024-06-27 20:00:55,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 442 transitions, 4636 flow [2024-06-27 20:00:56,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 442 transitions, 4358 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:56,968 INFO L231 Difference]: Finished difference. Result has 492 places, 389 transitions, 3494 flow [2024-06-27 20:00:56,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3494, PETRI_PLACES=492, PETRI_TRANSITIONS=389} [2024-06-27 20:00:56,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-27 20:00:56,968 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 389 transitions, 3494 flow [2024-06-27 20:00:56,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:56,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:56,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 20:00:56,969 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:56,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 653909154, now seen corresponding path program 11 times [2024-06-27 20:00:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:56,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129965205] [2024-06-27 20:00:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:58,193 INFO 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 20:00:58,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129965205] [2024-06-27 20:00:58,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129965205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:58,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:58,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:00:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751130956] [2024-06-27 20:00:58,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:58,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:00:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:00:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:00:58,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:00:58,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 389 transitions, 3494 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:00:58,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:58,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:00:58,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:59,246 INFO L124 PetriNetUnfolderBase]: 1043/2023 cut-off events. [2024-06-27 20:00:59,246 INFO L125 PetriNetUnfolderBase]: For 595591/595594 co-relation queries the response was YES. [2024-06-27 20:00:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14271 conditions, 2023 events. 1043/2023 cut-off events. For 595591/595594 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13036 event pairs, 123 based on Foata normal form. 10/2032 useless extension candidates. Maximal degree in co-relation 14057. Up to 1311 conditions per place. [2024-06-27 20:00:59,277 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 134 changer transitions 10/425 dead transitions. [2024-06-27 20:00:59,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 425 transitions, 5004 flow [2024-06-27 20:00:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:00:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:00:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-27 20:00:59,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:00:59,278 INFO L175 Difference]: Start difference. First operand has 492 places, 389 transitions, 3494 flow. Second operand 13 states and 169 transitions. [2024-06-27 20:00:59,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 425 transitions, 5004 flow [2024-06-27 20:01:01,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 425 transitions, 4934 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:01:01,615 INFO L231 Difference]: Finished difference. Result has 497 places, 384 transitions, 3651 flow [2024-06-27 20:01:01,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3651, PETRI_PLACES=497, PETRI_TRANSITIONS=384} [2024-06-27 20:01:01,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 466 predicate places. [2024-06-27 20:01:01,615 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 384 transitions, 3651 flow [2024-06-27 20:01:01,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:01,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:01,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:01,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 20:01:01,616 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:01,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash 483091404, now seen corresponding path program 12 times [2024-06-27 20:01:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838181082] [2024-06-27 20:01:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:02,604 INFO 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 20:01:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:02,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838181082] [2024-06-27 20:01:02,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838181082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:02,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:02,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:02,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200701253] [2024-06-27 20:01:02,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:02,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:02,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 384 transitions, 3651 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:02,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:02,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:02,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:03,575 INFO L124 PetriNetUnfolderBase]: 1062/2064 cut-off events. [2024-06-27 20:01:03,575 INFO L125 PetriNetUnfolderBase]: For 755005/755008 co-relation queries the response was YES. [2024-06-27 20:01:03,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16733 conditions, 2064 events. 1062/2064 cut-off events. For 755005/755008 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13307 event pairs, 140 based on Foata normal form. 10/2073 useless extension candidates. Maximal degree in co-relation 16520. Up to 1236 conditions per place. [2024-06-27 20:01:03,609 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 272 selfloop transitions, 137 changer transitions 10/421 dead transitions. [2024-06-27 20:01:03,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 421 transitions, 5155 flow [2024-06-27 20:01:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-27 20:01:03,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-27 20:01:03,610 INFO L175 Difference]: Start difference. First operand has 497 places, 384 transitions, 3651 flow. Second operand 13 states and 171 transitions. [2024-06-27 20:01:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 421 transitions, 5155 flow [2024-06-27 20:01:06,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 421 transitions, 4877 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 20:01:06,234 INFO L231 Difference]: Finished difference. Result has 492 places, 381 transitions, 3640 flow [2024-06-27 20:01:06,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3640, PETRI_PLACES=492, PETRI_TRANSITIONS=381} [2024-06-27 20:01:06,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-27 20:01:06,234 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 381 transitions, 3640 flow [2024-06-27 20:01:06,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:06,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:06,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:06,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 20:01:06,235 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:06,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 483206724, now seen corresponding path program 13 times [2024-06-27 20:01:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022767454] [2024-06-27 20:01:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:07,311 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 20:01:07,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022767454] [2024-06-27 20:01:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022767454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558169828] [2024-06-27 20:01:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:07,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:07,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:07,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:07,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 381 transitions, 3640 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:07,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:07,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:07,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:08,355 INFO L124 PetriNetUnfolderBase]: 1052/2046 cut-off events. [2024-06-27 20:01:08,356 INFO L125 PetriNetUnfolderBase]: For 746267/746270 co-relation queries the response was YES. [2024-06-27 20:01:08,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16656 conditions, 2046 events. 1052/2046 cut-off events. For 746267/746270 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13193 event pairs, 138 based on Foata normal form. 10/2055 useless extension candidates. Maximal degree in co-relation 16446. Up to 1301 conditions per place. [2024-06-27 20:01:08,382 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 270 selfloop transitions, 138 changer transitions 9/419 dead transitions. [2024-06-27 20:01:08,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 419 transitions, 5142 flow [2024-06-27 20:01:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:01:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:01:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 180 transitions. [2024-06-27 20:01:08,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 20:01:08,383 INFO L175 Difference]: Start difference. First operand has 492 places, 381 transitions, 3640 flow. Second operand 14 states and 180 transitions. [2024-06-27 20:01:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 419 transitions, 5142 flow [2024-06-27 20:01:11,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 419 transitions, 4864 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:01:11,320 INFO L231 Difference]: Finished difference. Result has 490 places, 377 transitions, 3620 flow [2024-06-27 20:01:11,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3620, PETRI_PLACES=490, PETRI_TRANSITIONS=377} [2024-06-27 20:01:11,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-27 20:01:11,321 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 377 transitions, 3620 flow [2024-06-27 20:01:11,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:11,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:11,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:11,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 20:01:11,321 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:11,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash 487680024, now seen corresponding path program 14 times [2024-06-27 20:01:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:11,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555392274] [2024-06-27 20:01:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:11,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:12,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:12,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555392274] [2024-06-27 20:01:12,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555392274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:12,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:12,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:12,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811559604] [2024-06-27 20:01:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:12,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:12,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:12,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 377 transitions, 3620 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:12,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:12,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:12,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:13,353 INFO L124 PetriNetUnfolderBase]: 1051/2049 cut-off events. [2024-06-27 20:01:13,353 INFO L125 PetriNetUnfolderBase]: For 762895/762895 co-relation queries the response was YES. [2024-06-27 20:01:13,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 2049 events. 1051/2049 cut-off events. For 762895/762895 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13204 event pairs, 248 based on Foata normal form. 10/2058 useless extension candidates. Maximal degree in co-relation 16532. Up to 1573 conditions per place. [2024-06-27 20:01:13,379 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 312 selfloop transitions, 101 changer transitions 15/430 dead transitions. [2024-06-27 20:01:13,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 430 transitions, 4858 flow [2024-06-27 20:01:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-27 20:01:13,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-27 20:01:13,379 INFO L175 Difference]: Start difference. First operand has 490 places, 377 transitions, 3620 flow. Second operand 13 states and 159 transitions. [2024-06-27 20:01:13,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 430 transitions, 4858 flow [2024-06-27 20:01:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 430 transitions, 4578 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:15,959 INFO L231 Difference]: Finished difference. Result has 490 places, 376 transitions, 3544 flow [2024-06-27 20:01:15,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3544, PETRI_PLACES=490, PETRI_TRANSITIONS=376} [2024-06-27 20:01:15,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-27 20:01:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 376 transitions, 3544 flow [2024-06-27 20:01:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 20:01:15,960 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:15,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash 483211374, now seen corresponding path program 15 times [2024-06-27 20:01:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675759063] [2024-06-27 20:01:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:17,112 INFO 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 20:01:17,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675759063] [2024-06-27 20:01:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675759063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87757482] [2024-06-27 20:01:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:17,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:17,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:17,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:17,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:17,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 376 transitions, 3544 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:17,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:17,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:18,083 INFO L124 PetriNetUnfolderBase]: 1012/1970 cut-off events. [2024-06-27 20:01:18,083 INFO L125 PetriNetUnfolderBase]: For 603040/603043 co-relation queries the response was YES. [2024-06-27 20:01:18,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14252 conditions, 1970 events. 1012/1970 cut-off events. For 603040/603043 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12630 event pairs, 129 based on Foata normal form. 12/1981 useless extension candidates. Maximal degree in co-relation 14042. Up to 1301 conditions per place. [2024-06-27 20:01:18,112 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 126 changer transitions 23/409 dead transitions. [2024-06-27 20:01:18,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 409 transitions, 4590 flow [2024-06-27 20:01:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:01:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:01:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-27 20:01:18,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-27 20:01:18,113 INFO L175 Difference]: Start difference. First operand has 490 places, 376 transitions, 3544 flow. Second operand 14 states and 174 transitions. [2024-06-27 20:01:18,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 409 transitions, 4590 flow [2024-06-27 20:01:20,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 409 transitions, 4383 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:20,325 INFO L231 Difference]: Finished difference. Result has 491 places, 363 transitions, 3497 flow [2024-06-27 20:01:20,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3497, PETRI_PLACES=491, PETRI_TRANSITIONS=363} [2024-06-27 20:01:20,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 460 predicate places. [2024-06-27 20:01:20,326 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 363 transitions, 3497 flow [2024-06-27 20:01:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:20,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:20,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:20,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 20:01:20,326 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:20,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 926006670, now seen corresponding path program 2 times [2024-06-27 20:01:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289365958] [2024-06-27 20:01:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:21,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289365958] [2024-06-27 20:01:21,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289365958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:21,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019012318] [2024-06-27 20:01:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:21,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:21,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 363 transitions, 3497 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:21,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:21,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:22,080 INFO L124 PetriNetUnfolderBase]: 976/1898 cut-off events. [2024-06-27 20:01:22,080 INFO L125 PetriNetUnfolderBase]: For 482655/482658 co-relation queries the response was YES. [2024-06-27 20:01:22,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13798 conditions, 1898 events. 976/1898 cut-off events. For 482655/482658 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 12057 event pairs, 141 based on Foata normal form. 4/1901 useless extension candidates. Maximal degree in co-relation 13590. Up to 1302 conditions per place. [2024-06-27 20:01:22,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 107 changer transitions 0/388 dead transitions. [2024-06-27 20:01:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 388 transitions, 4349 flow [2024-06-27 20:01:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:01:22,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:01:22,110 INFO L175 Difference]: Start difference. First operand has 491 places, 363 transitions, 3497 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:01:22,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 388 transitions, 4349 flow [2024-06-27 20:01:24,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 388 transitions, 4065 flow, removed 14 selfloop flow, removed 18 redundant places. [2024-06-27 20:01:24,104 INFO L231 Difference]: Finished difference. Result has 472 places, 364 transitions, 3445 flow [2024-06-27 20:01:24,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3445, PETRI_PLACES=472, PETRI_TRANSITIONS=364} [2024-06-27 20:01:24,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 441 predicate places. [2024-06-27 20:01:24,105 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 364 transitions, 3445 flow [2024-06-27 20:01:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:24,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 20:01:24,105 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:24,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash 919326976, now seen corresponding path program 16 times [2024-06-27 20:01:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864973189] [2024-06-27 20:01:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:25,266 INFO 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 20:01:25,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:25,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864973189] [2024-06-27 20:01:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864973189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:25,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:25,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:25,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660624464] [2024-06-27 20:01:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:25,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:25,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 364 transitions, 3445 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:25,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:25,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:25,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:26,151 INFO L124 PetriNetUnfolderBase]: 1017/1985 cut-off events. [2024-06-27 20:01:26,151 INFO L125 PetriNetUnfolderBase]: For 673681/673684 co-relation queries the response was YES. [2024-06-27 20:01:26,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15835 conditions, 1985 events. 1017/1985 cut-off events. For 673681/673684 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12721 event pairs, 156 based on Foata normal form. 10/1994 useless extension candidates. Maximal degree in co-relation 15634. Up to 1291 conditions per place. [2024-06-27 20:01:26,180 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 107 changer transitions 7/398 dead transitions. [2024-06-27 20:01:26,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 398 transitions, 4855 flow [2024-06-27 20:01:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-27 20:01:26,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-27 20:01:26,185 INFO L175 Difference]: Start difference. First operand has 472 places, 364 transitions, 3445 flow. Second operand 13 states and 171 transitions. [2024-06-27 20:01:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 398 transitions, 4855 flow [2024-06-27 20:01:28,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 398 transitions, 4633 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:01:28,602 INFO L231 Difference]: Finished difference. Result has 475 places, 362 transitions, 3429 flow [2024-06-27 20:01:28,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3429, PETRI_PLACES=475, PETRI_TRANSITIONS=362} [2024-06-27 20:01:28,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-27 20:01:28,602 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 362 transitions, 3429 flow [2024-06-27 20:01:28,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:28,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:28,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 20:01:28,602 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:28,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 919331626, now seen corresponding path program 17 times [2024-06-27 20:01:28,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:28,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55865292] [2024-06-27 20:01:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:29,956 INFO 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 20:01:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55865292] [2024-06-27 20:01:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55865292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:29,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830220097] [2024-06-27 20:01:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:30,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:30,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 362 transitions, 3429 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:30,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:30,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:30,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:30,878 INFO L124 PetriNetUnfolderBase]: 1022/1998 cut-off events. [2024-06-27 20:01:30,879 INFO L125 PetriNetUnfolderBase]: For 712481/712481 co-relation queries the response was YES. [2024-06-27 20:01:30,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 1998 events. 1022/1998 cut-off events. For 712481/712481 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12765 event pairs, 274 based on Foata normal form. 10/2007 useless extension candidates. Maximal degree in co-relation 15822. Up to 1576 conditions per place. [2024-06-27 20:01:30,909 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 328 selfloop transitions, 69 changer transitions 15/414 dead transitions. [2024-06-27 20:01:30,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 414 transitions, 4620 flow [2024-06-27 20:01:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:01:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:01:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 166 transitions. [2024-06-27 20:01:30,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-27 20:01:30,910 INFO L175 Difference]: Start difference. First operand has 475 places, 362 transitions, 3429 flow. Second operand 14 states and 166 transitions. [2024-06-27 20:01:30,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 414 transitions, 4620 flow [2024-06-27 20:01:33,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 414 transitions, 4396 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:01:33,258 INFO L231 Difference]: Finished difference. Result has 479 places, 363 transitions, 3376 flow [2024-06-27 20:01:33,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3376, PETRI_PLACES=479, PETRI_TRANSITIONS=363} [2024-06-27 20:01:33,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-27 20:01:33,259 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 363 transitions, 3376 flow [2024-06-27 20:01:33,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:33,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:33,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 20:01:33,259 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:33,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash 753097846, now seen corresponding path program 18 times [2024-06-27 20:01:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637500751] [2024-06-27 20:01:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:34,334 INFO 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 20:01:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637500751] [2024-06-27 20:01:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637500751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942039096] [2024-06-27 20:01:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:34,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:34,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 363 transitions, 3376 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:34,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:34,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:34,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:35,162 INFO L124 PetriNetUnfolderBase]: 1021/1995 cut-off events. [2024-06-27 20:01:35,162 INFO L125 PetriNetUnfolderBase]: For 703732/703732 co-relation queries the response was YES. [2024-06-27 20:01:35,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15918 conditions, 1995 events. 1021/1995 cut-off events. For 703732/703732 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12766 event pairs, 271 based on Foata normal form. 10/2004 useless extension candidates. Maximal degree in co-relation 15713. Up to 1528 conditions per place. [2024-06-27 20:01:35,191 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 314 selfloop transitions, 85 changer transitions 11/412 dead transitions. [2024-06-27 20:01:35,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 412 transitions, 4550 flow [2024-06-27 20:01:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-27 20:01:35,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-27 20:01:35,192 INFO L175 Difference]: Start difference. First operand has 479 places, 363 transitions, 3376 flow. Second operand 13 states and 159 transitions. [2024-06-27 20:01:35,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 412 transitions, 4550 flow [2024-06-27 20:01:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 412 transitions, 4467 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:01:37,443 INFO L231 Difference]: Finished difference. Result has 483 places, 366 transitions, 3512 flow [2024-06-27 20:01:37,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3512, PETRI_PLACES=483, PETRI_TRANSITIONS=366} [2024-06-27 20:01:37,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 20:01:37,444 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 366 transitions, 3512 flow [2024-06-27 20:01:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:37,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:37,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:37,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 20:01:37,444 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:37,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1537599336, now seen corresponding path program 19 times [2024-06-27 20:01:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104154307] [2024-06-27 20:01:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:38,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104154307] [2024-06-27 20:01:38,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104154307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:38,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:38,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465532180] [2024-06-27 20:01:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:38,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:38,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 366 transitions, 3512 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:38,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:38,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:38,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:39,658 INFO L124 PetriNetUnfolderBase]: 1038/2032 cut-off events. [2024-06-27 20:01:39,658 INFO L125 PetriNetUnfolderBase]: For 814498/814501 co-relation queries the response was YES. [2024-06-27 20:01:39,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18010 conditions, 2032 events. 1038/2032 cut-off events. For 814498/814501 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13025 event pairs, 175 based on Foata normal form. 10/2041 useless extension candidates. Maximal degree in co-relation 17804. Up to 1338 conditions per place. [2024-06-27 20:01:39,689 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 108 changer transitions 10/399 dead transitions. [2024-06-27 20:01:39,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 399 transitions, 4920 flow [2024-06-27 20:01:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-27 20:01:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-27 20:01:39,690 INFO L175 Difference]: Start difference. First operand has 483 places, 366 transitions, 3512 flow. Second operand 13 states and 167 transitions. [2024-06-27 20:01:39,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 399 transitions, 4920 flow [2024-06-27 20:01:42,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 399 transitions, 4759 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:01:42,614 INFO L231 Difference]: Finished difference. Result has 486 places, 361 transitions, 3511 flow [2024-06-27 20:01:42,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3511, PETRI_PLACES=486, PETRI_TRANSITIONS=361} [2024-06-27 20:01:42,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 455 predicate places. [2024-06-27 20:01:42,614 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 361 transitions, 3511 flow [2024-06-27 20:01:42,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:42,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:42,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:42,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 20:01:42,614 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:42,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash 748629196, now seen corresponding path program 20 times [2024-06-27 20:01:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:42,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411299270] [2024-06-27 20:01:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:43,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:43,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411299270] [2024-06-27 20:01:43,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411299270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:43,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:43,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:43,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697161419] [2024-06-27 20:01:43,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:43,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:43,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:43,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:43,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 361 transitions, 3511 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:43,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:43,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:44,675 INFO L124 PetriNetUnfolderBase]: 1019/1999 cut-off events. [2024-06-27 20:01:44,675 INFO L125 PetriNetUnfolderBase]: For 844908/844911 co-relation queries the response was YES. [2024-06-27 20:01:44,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16250 conditions, 1999 events. 1019/1999 cut-off events. For 844908/844911 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12815 event pairs, 168 based on Foata normal form. 22/2020 useless extension candidates. Maximal degree in co-relation 16045. Up to 1298 conditions per place. [2024-06-27 20:01:44,704 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 260 selfloop transitions, 112 changer transitions 17/391 dead transitions. [2024-06-27 20:01:44,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 391 transitions, 4497 flow [2024-06-27 20:01:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:01:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:01:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-27 20:01:44,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-27 20:01:44,705 INFO L175 Difference]: Start difference. First operand has 486 places, 361 transitions, 3511 flow. Second operand 14 states and 174 transitions. [2024-06-27 20:01:44,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 391 transitions, 4497 flow [2024-06-27 20:01:47,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 391 transitions, 4275 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:47,315 INFO L231 Difference]: Finished difference. Result has 483 places, 353 transitions, 3451 flow [2024-06-27 20:01:47,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3451, PETRI_PLACES=483, PETRI_TRANSITIONS=353} [2024-06-27 20:01:47,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 20:01:47,316 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 353 transitions, 3451 flow [2024-06-27 20:01:47,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:47,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:47,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:47,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 20:01:47,316 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash 748624546, now seen corresponding path program 21 times [2024-06-27 20:01:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:47,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219691759] [2024-06-27 20:01:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:48,381 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 20:01:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219691759] [2024-06-27 20:01:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219691759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518447485] [2024-06-27 20:01:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:48,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:48,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 353 transitions, 3451 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:49,265 INFO L124 PetriNetUnfolderBase]: 981/1925 cut-off events. [2024-06-27 20:01:49,265 INFO L125 PetriNetUnfolderBase]: For 674046/674049 co-relation queries the response was YES. [2024-06-27 20:01:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15650 conditions, 1925 events. 981/1925 cut-off events. For 674046/674049 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12275 event pairs, 160 based on Foata normal form. 10/1934 useless extension candidates. Maximal degree in co-relation 15447. Up to 1288 conditions per place. [2024-06-27 20:01:49,293 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 110 changer transitions 11/381 dead transitions. [2024-06-27 20:01:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 381 transitions, 4347 flow [2024-06-27 20:01:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-27 20:01:49,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-27 20:01:49,294 INFO L175 Difference]: Start difference. First operand has 483 places, 353 transitions, 3451 flow. Second operand 13 states and 162 transitions. [2024-06-27 20:01:49,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 381 transitions, 4347 flow [2024-06-27 20:01:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 381 transitions, 4107 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-27 20:01:51,787 INFO L231 Difference]: Finished difference. Result has 474 places, 350 transitions, 3421 flow [2024-06-27 20:01:51,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3421, PETRI_PLACES=474, PETRI_TRANSITIONS=350} [2024-06-27 20:01:51,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-27 20:01:51,787 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 350 transitions, 3421 flow [2024-06-27 20:01:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:51,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:51,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 20:01:51,788 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:51,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash 748509226, now seen corresponding path program 22 times [2024-06-27 20:01:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:51,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575048965] [2024-06-27 20:01:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:52,761 INFO 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 20:01:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575048965] [2024-06-27 20:01:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575048965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:52,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678399119] [2024-06-27 20:01:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:53,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:53,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 350 transitions, 3421 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:53,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:53,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:53,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:53,750 INFO L124 PetriNetUnfolderBase]: 1003/1971 cut-off events. [2024-06-27 20:01:53,751 INFO L125 PetriNetUnfolderBase]: For 788029/788032 co-relation queries the response was YES. [2024-06-27 20:01:53,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17591 conditions, 1971 events. 1003/1971 cut-off events. For 788029/788032 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12566 event pairs, 167 based on Foata normal form. 10/1980 useless extension candidates. Maximal degree in co-relation 17391. Up to 1189 conditions per place. [2024-06-27 20:01:53,777 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 105 changer transitions 14/384 dead transitions. [2024-06-27 20:01:53,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 384 transitions, 4789 flow [2024-06-27 20:01:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-27 20:01:53,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-27 20:01:53,778 INFO L175 Difference]: Start difference. First operand has 474 places, 350 transitions, 3421 flow. Second operand 13 states and 168 transitions. [2024-06-27 20:01:53,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 384 transitions, 4789 flow [2024-06-27 20:01:56,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 384 transitions, 4539 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:56,427 INFO L231 Difference]: Finished difference. Result has 469 places, 343 transitions, 3341 flow [2024-06-27 20:01:56,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3341, PETRI_PLACES=469, PETRI_TRANSITIONS=343} [2024-06-27 20:01:56,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-27 20:01:56,427 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 343 transitions, 3341 flow [2024-06-27 20:01:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:56,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:56,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 20:01:56,428 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:56,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1658481256, now seen corresponding path program 23 times [2024-06-27 20:01:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589010352] [2024-06-27 20:01:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:56,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589010352] [2024-06-27 20:01:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589010352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:01:57,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163121455] [2024-06-27 20:01:57,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:01:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:01:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:01:57,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:01:57,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 343 transitions, 3341 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:01:57,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:57,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:01:57,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:58,672 INFO L124 PetriNetUnfolderBase]: 1001/1967 cut-off events. [2024-06-27 20:01:58,672 INFO L125 PetriNetUnfolderBase]: For 788056/788056 co-relation queries the response was YES. [2024-06-27 20:01:58,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17426 conditions, 1967 events. 1001/1967 cut-off events. For 788056/788056 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12515 event pairs, 294 based on Foata normal form. 10/1976 useless extension candidates. Maximal degree in co-relation 17229. Up to 1554 conditions per place. [2024-06-27 20:01:58,700 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 308 selfloop transitions, 69 changer transitions 11/390 dead transitions. [2024-06-27 20:01:58,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 390 transitions, 4441 flow [2024-06-27 20:01:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:01:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:01:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-27 20:01:58,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 20:01:58,701 INFO L175 Difference]: Start difference. First operand has 469 places, 343 transitions, 3341 flow. Second operand 14 states and 161 transitions. [2024-06-27 20:01:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 390 transitions, 4441 flow [2024-06-27 20:02:00,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 390 transitions, 4219 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 20:02:00,896 INFO L231 Difference]: Finished difference. Result has 466 places, 345 transitions, 3296 flow [2024-06-27 20:02:00,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3296, PETRI_PLACES=466, PETRI_TRANSITIONS=345} [2024-06-27 20:02:00,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 435 predicate places. [2024-06-27 20:02:00,896 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 345 transitions, 3296 flow [2024-06-27 20:02:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:00,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:00,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 20:02:00,897 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:00,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:00,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1658485906, now seen corresponding path program 24 times [2024-06-27 20:02:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:00,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266736691] [2024-06-27 20:02:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:02,068 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 20:02:02,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266736691] [2024-06-27 20:02:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266736691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:02,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:02,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:02,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51855632] [2024-06-27 20:02:02,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:02,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:02,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:02,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:02,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 345 transitions, 3296 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:02,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:02,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:03,048 INFO L124 PetriNetUnfolderBase]: 989/1945 cut-off events. [2024-06-27 20:02:03,048 INFO L125 PetriNetUnfolderBase]: For 722903/722906 co-relation queries the response was YES. [2024-06-27 20:02:03,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16966 conditions, 1945 events. 989/1945 cut-off events. For 722903/722906 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12311 event pairs, 173 based on Foata normal form. 10/1954 useless extension candidates. Maximal degree in co-relation 16770. Up to 1263 conditions per place. [2024-06-27 20:02:03,072 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 103 changer transitions 10/378 dead transitions. [2024-06-27 20:02:03,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 378 transitions, 4626 flow [2024-06-27 20:02:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:02:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:02:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-27 20:02:03,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-27 20:02:03,072 INFO L175 Difference]: Start difference. First operand has 466 places, 345 transitions, 3296 flow. Second operand 13 states and 165 transitions. [2024-06-27 20:02:03,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 378 transitions, 4626 flow [2024-06-27 20:02:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 378 transitions, 4493 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:05,943 INFO L231 Difference]: Finished difference. Result has 467 places, 340 transitions, 3322 flow [2024-06-27 20:02:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3322, PETRI_PLACES=467, PETRI_TRANSITIONS=340} [2024-06-27 20:02:05,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-27 20:02:05,944 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 340 transitions, 3322 flow [2024-06-27 20:02:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:05,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 20:02:05,944 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:05,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash -637611462, now seen corresponding path program 3 times [2024-06-27 20:02:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:05,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973527703] [2024-06-27 20:02:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:05,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:07,077 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 20:02:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973527703] [2024-06-27 20:02:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973527703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:07,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:07,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537500621] [2024-06-27 20:02:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:07,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:07,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 340 transitions, 3322 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:07,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:07,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:07,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:07,849 INFO L124 PetriNetUnfolderBase]: 971/1907 cut-off events. [2024-06-27 20:02:07,849 INFO L125 PetriNetUnfolderBase]: For 650576/650579 co-relation queries the response was YES. [2024-06-27 20:02:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16832 conditions, 1907 events. 971/1907 cut-off events. For 650576/650579 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12048 event pairs, 179 based on Foata normal form. 4/1910 useless extension candidates. Maximal degree in co-relation 16637. Up to 1329 conditions per place. [2024-06-27 20:02:07,878 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 104 changer transitions 0/364 dead transitions. [2024-06-27 20:02:07,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 364 transitions, 4124 flow [2024-06-27 20:02:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 20:02:07,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 20:02:07,879 INFO L175 Difference]: Start difference. First operand has 467 places, 340 transitions, 3322 flow. Second operand 12 states and 145 transitions. [2024-06-27 20:02:07,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 364 transitions, 4124 flow [2024-06-27 20:02:10,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 364 transitions, 3912 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:02:10,532 INFO L231 Difference]: Finished difference. Result has 462 places, 341 transitions, 3338 flow [2024-06-27 20:02:10,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3338, PETRI_PLACES=462, PETRI_TRANSITIONS=341} [2024-06-27 20:02:10,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-27 20:02:10,532 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 341 transitions, 3338 flow [2024-06-27 20:02:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:10,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 20:02:10,533 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:10,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1651806212, now seen corresponding path program 4 times [2024-06-27 20:02:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250122063] [2024-06-27 20:02:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:11,623 INFO 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 20:02:11,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:11,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250122063] [2024-06-27 20:02:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250122063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922761368] [2024-06-27 20:02:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:11,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:11,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:11,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 341 transitions, 3338 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:11,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:11,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:11,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:12,313 INFO L124 PetriNetUnfolderBase]: 975/1915 cut-off events. [2024-06-27 20:02:12,313 INFO L125 PetriNetUnfolderBase]: For 642587/642590 co-relation queries the response was YES. [2024-06-27 20:02:12,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16848 conditions, 1915 events. 975/1915 cut-off events. For 642587/642590 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12112 event pairs, 181 based on Foata normal form. 4/1918 useless extension candidates. Maximal degree in co-relation 16655. Up to 1337 conditions per place. [2024-06-27 20:02:12,340 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 103 changer transitions 0/366 dead transitions. [2024-06-27 20:02:12,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 366 transitions, 4150 flow [2024-06-27 20:02:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:02:12,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:02:12,342 INFO L175 Difference]: Start difference. First operand has 462 places, 341 transitions, 3338 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:02:12,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 366 transitions, 4150 flow [2024-06-27 20:02:14,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 366 transitions, 3932 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:14,903 INFO L231 Difference]: Finished difference. Result has 464 places, 342 transitions, 3348 flow [2024-06-27 20:02:14,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3120, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3348, PETRI_PLACES=464, PETRI_TRANSITIONS=342} [2024-06-27 20:02:14,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-27 20:02:14,903 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 342 transitions, 3348 flow [2024-06-27 20:02:14,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:14,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:14,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:14,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 20:02:14,904 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:14,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1421829302, now seen corresponding path program 5 times [2024-06-27 20:02:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037566943] [2024-06-27 20:02:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:14,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:16,073 INFO 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 20:02:16,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037566943] [2024-06-27 20:02:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037566943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:16,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:16,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416869572] [2024-06-27 20:02:16,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:16,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:16,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 342 transitions, 3348 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:16,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:16,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:16,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:16,894 INFO L124 PetriNetUnfolderBase]: 979/1923 cut-off events. [2024-06-27 20:02:16,895 INFO L125 PetriNetUnfolderBase]: For 651030/651033 co-relation queries the response was YES. [2024-06-27 20:02:16,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16929 conditions, 1923 events. 979/1923 cut-off events. For 651030/651033 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12186 event pairs, 183 based on Foata normal form. 4/1926 useless extension candidates. Maximal degree in co-relation 16735. Up to 1273 conditions per place. [2024-06-27 20:02:16,922 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 107 changer transitions 0/366 dead transitions. [2024-06-27 20:02:16,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 366 transitions, 4156 flow [2024-06-27 20:02:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:02:16,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:02:16,923 INFO L175 Difference]: Start difference. First operand has 464 places, 342 transitions, 3348 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:02:16,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 366 transitions, 4156 flow [2024-06-27 20:02:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 366 transitions, 3938 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:19,413 INFO L231 Difference]: Finished difference. Result has 466 places, 343 transitions, 3368 flow [2024-06-27 20:02:19,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3368, PETRI_PLACES=466, PETRI_TRANSITIONS=343} [2024-06-27 20:02:19,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 435 predicate places. [2024-06-27 20:02:19,413 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 343 transitions, 3368 flow [2024-06-27 20:02:19,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:19,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:19,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:19,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 20:02:19,414 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:19,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1381978974, now seen corresponding path program 25 times [2024-06-27 20:02:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21411049] [2024-06-27 20:02:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:20,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21411049] [2024-06-27 20:02:20,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21411049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:20,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:20,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:20,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118960759] [2024-06-27 20:02:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:20,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:20,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 343 transitions, 3368 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:20,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:20,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:20,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:21,617 INFO L124 PetriNetUnfolderBase]: 1020/2012 cut-off events. [2024-06-27 20:02:21,617 INFO L125 PetriNetUnfolderBase]: For 858875/858875 co-relation queries the response was YES. [2024-06-27 20:02:21,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19230 conditions, 2012 events. 1020/2012 cut-off events. For 858875/858875 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12850 event pairs, 207 based on Foata normal form. 8/2019 useless extension candidates. Maximal degree in co-relation 19035. Up to 1334 conditions per place. [2024-06-27 20:02:21,648 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 102 changer transitions 7/374 dead transitions. [2024-06-27 20:02:21,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 374 transitions, 4686 flow [2024-06-27 20:02:21,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:02:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:02:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-27 20:02:21,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:02:21,649 INFO L175 Difference]: Start difference. First operand has 466 places, 343 transitions, 3368 flow. Second operand 13 states and 169 transitions. [2024-06-27 20:02:21,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 374 transitions, 4686 flow [2024-06-27 20:02:24,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 374 transitions, 4458 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:24,490 INFO L231 Difference]: Finished difference. Result has 469 places, 341 transitions, 3336 flow [2024-06-27 20:02:24,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3336, PETRI_PLACES=469, PETRI_TRANSITIONS=341} [2024-06-27 20:02:24,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-27 20:02:24,490 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 341 transitions, 3336 flow [2024-06-27 20:02:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 20:02:24,491 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1175937616, now seen corresponding path program 6 times [2024-06-27 20:02:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:24,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703768609] [2024-06-27 20:02:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:25,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703768609] [2024-06-27 20:02:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703768609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241359579] [2024-06-27 20:02:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:25,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:25,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:25,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:25,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 341 transitions, 3336 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:25,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:25,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:25,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:26,474 INFO L124 PetriNetUnfolderBase]: 1006/1982 cut-off events. [2024-06-27 20:02:26,474 INFO L125 PetriNetUnfolderBase]: For 795067/795067 co-relation queries the response was YES. [2024-06-27 20:02:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19093 conditions, 1982 events. 1006/1982 cut-off events. For 795067/795067 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12613 event pairs, 217 based on Foata normal form. 2/1983 useless extension candidates. Maximal degree in co-relation 18897. Up to 1402 conditions per place. [2024-06-27 20:02:26,504 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 99 changer transitions 0/363 dead transitions. [2024-06-27 20:02:26,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 363 transitions, 4136 flow [2024-06-27 20:02:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:02:26,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:02:26,505 INFO L175 Difference]: Start difference. First operand has 469 places, 341 transitions, 3336 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:02:26,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 363 transitions, 4136 flow [2024-06-27 20:02:29,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 363 transitions, 3930 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:02:29,497 INFO L231 Difference]: Finished difference. Result has 467 places, 342 transitions, 3354 flow [2024-06-27 20:02:29,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3354, PETRI_PLACES=467, PETRI_TRANSITIONS=342} [2024-06-27 20:02:29,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-27 20:02:29,497 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 342 transitions, 3354 flow [2024-06-27 20:02:29,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:29,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:29,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:29,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 20:02:29,498 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:29,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1412301270, now seen corresponding path program 26 times [2024-06-27 20:02:29,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758024120] [2024-06-27 20:02:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:30,848 INFO 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 20:02:30,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758024120] [2024-06-27 20:02:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758024120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225905578] [2024-06-27 20:02:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:30,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:31,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:31,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 342 transitions, 3354 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:31,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:31,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:31,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:31,753 INFO L124 PetriNetUnfolderBase]: 1031/2033 cut-off events. [2024-06-27 20:02:31,753 INFO L125 PetriNetUnfolderBase]: For 885964/885964 co-relation queries the response was YES. [2024-06-27 20:02:31,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19396 conditions, 2033 events. 1031/2033 cut-off events. For 885964/885964 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13040 event pairs, 340 based on Foata normal form. 10/2042 useless extension candidates. Maximal degree in co-relation 19201. Up to 1623 conditions per place. [2024-06-27 20:02:31,783 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 307 selfloop transitions, 67 changer transitions 11/387 dead transitions. [2024-06-27 20:02:31,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 387 transitions, 4441 flow [2024-06-27 20:02:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:02:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:02:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 165 transitions. [2024-06-27 20:02:31,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36830357142857145 [2024-06-27 20:02:31,784 INFO L175 Difference]: Start difference. First operand has 467 places, 342 transitions, 3354 flow. Second operand 14 states and 165 transitions. [2024-06-27 20:02:31,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 387 transitions, 4441 flow [2024-06-27 20:02:34,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 387 transitions, 4215 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:34,439 INFO L231 Difference]: Finished difference. Result has 475 places, 348 transitions, 3351 flow [2024-06-27 20:02:34,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3351, PETRI_PLACES=475, PETRI_TRANSITIONS=348} [2024-06-27 20:02:34,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-27 20:02:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 348 transitions, 3351 flow [2024-06-27 20:02:34,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:34,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:34,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:34,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 20:02:34,440 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:34,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1175649316, now seen corresponding path program 7 times [2024-06-27 20:02:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557185506] [2024-06-27 20:02:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:35,625 INFO 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 20:02:35,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:35,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557185506] [2024-06-27 20:02:35,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557185506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:35,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:35,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723776273] [2024-06-27 20:02:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:35,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:35,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 348 transitions, 3351 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:35,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:35,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:35,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:36,545 INFO L124 PetriNetUnfolderBase]: 1018/2006 cut-off events. [2024-06-27 20:02:36,545 INFO L125 PetriNetUnfolderBase]: For 821322/821322 co-relation queries the response was YES. [2024-06-27 20:02:36,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19513 conditions, 2006 events. 1018/2006 cut-off events. For 821322/821322 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12832 event pairs, 224 based on Foata normal form. 2/2007 useless extension candidates. Maximal degree in co-relation 19313. Up to 1383 conditions per place. [2024-06-27 20:02:36,577 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 266 selfloop transitions, 104 changer transitions 0/372 dead transitions. [2024-06-27 20:02:36,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 372 transitions, 4517 flow [2024-06-27 20:02:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:02:36,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:02:36,579 INFO L175 Difference]: Start difference. First operand has 475 places, 348 transitions, 3351 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:02:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 372 transitions, 4517 flow [2024-06-27 20:02:39,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 372 transitions, 4426 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:02:39,952 INFO L231 Difference]: Finished difference. Result has 478 places, 350 transitions, 3520 flow [2024-06-27 20:02:39,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3520, PETRI_PLACES=478, PETRI_TRANSITIONS=350} [2024-06-27 20:02:39,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-27 20:02:39,953 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 350 transitions, 3520 flow [2024-06-27 20:02:39,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:39,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:39,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:39,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 20:02:39,953 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:39,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1412305920, now seen corresponding path program 27 times [2024-06-27 20:02:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117791082] [2024-06-27 20:02:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:41,163 INFO 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 20:02:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117791082] [2024-06-27 20:02:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117791082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359264114] [2024-06-27 20:02:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:41,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:41,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 350 transitions, 3520 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:41,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:41,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:41,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:42,243 INFO L124 PetriNetUnfolderBase]: 1059/2093 cut-off events. [2024-06-27 20:02:42,244 INFO L125 PetriNetUnfolderBase]: For 1024294/1024294 co-relation queries the response was YES. [2024-06-27 20:02:42,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21900 conditions, 2093 events. 1059/2093 cut-off events. For 1024294/1024294 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13498 event pairs, 237 based on Foata normal form. 8/2100 useless extension candidates. Maximal degree in co-relation 21701. Up to 1412 conditions per place. [2024-06-27 20:02:42,277 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 105 changer transitions 10/380 dead transitions. [2024-06-27 20:02:42,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 380 transitions, 4848 flow [2024-06-27 20:02:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:02:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:02:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-27 20:02:42,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-27 20:02:42,278 INFO L175 Difference]: Start difference. First operand has 478 places, 350 transitions, 3520 flow. Second operand 13 states and 165 transitions. [2024-06-27 20:02:42,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 380 transitions, 4848 flow [2024-06-27 20:02:46,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 380 transitions, 4692 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:02:46,119 INFO L231 Difference]: Finished difference. Result has 483 places, 345 transitions, 3527 flow [2024-06-27 20:02:46,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3527, PETRI_PLACES=483, PETRI_TRANSITIONS=345} [2024-06-27 20:02:46,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 20:02:46,120 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 345 transitions, 3527 flow [2024-06-27 20:02:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:46,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:46,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 20:02:46,120 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:46,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1405626226, now seen corresponding path program 8 times [2024-06-27 20:02:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:46,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064709736] [2024-06-27 20:02:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:47,153 INFO 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 20:02:47,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064709736] [2024-06-27 20:02:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064709736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:47,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465703288] [2024-06-27 20:02:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:47,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:47,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 345 transitions, 3527 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:47,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:47,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:47,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:47,886 INFO L124 PetriNetUnfolderBase]: 1034/2042 cut-off events. [2024-06-27 20:02:47,886 INFO L125 PetriNetUnfolderBase]: For 934794/934794 co-relation queries the response was YES. [2024-06-27 20:02:47,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21465 conditions, 2042 events. 1034/2042 cut-off events. For 934794/934794 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 13095 event pairs, 240 based on Foata normal form. 2/2043 useless extension candidates. Maximal degree in co-relation 21264. Up to 1465 conditions per place. [2024-06-27 20:02:47,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 105 changer transitions 0/366 dead transitions. [2024-06-27 20:02:47,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 366 transitions, 4313 flow [2024-06-27 20:02:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:02:47,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:02:47,920 INFO L175 Difference]: Start difference. First operand has 483 places, 345 transitions, 3527 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:02:47,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 366 transitions, 4313 flow [2024-06-27 20:02:51,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 366 transitions, 4083 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-27 20:02:51,572 INFO L231 Difference]: Finished difference. Result has 478 places, 345 transitions, 3511 flow [2024-06-27 20:02:51,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3511, PETRI_PLACES=478, PETRI_TRANSITIONS=345} [2024-06-27 20:02:51,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-27 20:02:51,573 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 345 transitions, 3511 flow [2024-06-27 20:02:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 20:02:51,573 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:51,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash -590793140, now seen corresponding path program 9 times [2024-06-27 20:02:51,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888573345] [2024-06-27 20:02:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:51,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:52,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888573345] [2024-06-27 20:02:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888573345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940080808] [2024-06-27 20:02:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:52,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:52,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:52,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 345 transitions, 3511 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:52,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:52,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:52,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:53,418 INFO L124 PetriNetUnfolderBase]: 1038/2050 cut-off events. [2024-06-27 20:02:53,418 INFO L125 PetriNetUnfolderBase]: For 923469/923469 co-relation queries the response was YES. [2024-06-27 20:02:53,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21435 conditions, 2050 events. 1038/2050 cut-off events. For 923469/923469 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13169 event pairs, 238 based on Foata normal form. 2/2051 useless extension candidates. Maximal degree in co-relation 21236. Up to 1473 conditions per place. [2024-06-27 20:02:53,450 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 103 changer transitions 0/367 dead transitions. [2024-06-27 20:02:53,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 367 transitions, 4323 flow [2024-06-27 20:02:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:02:53,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:02:53,451 INFO L175 Difference]: Start difference. First operand has 478 places, 345 transitions, 3511 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:02:53,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 367 transitions, 4323 flow [2024-06-27 20:02:57,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 367 transitions, 4104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:02:57,121 INFO L231 Difference]: Finished difference. Result has 479 places, 346 transitions, 3528 flow [2024-06-27 20:02:57,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3528, PETRI_PLACES=479, PETRI_TRANSITIONS=346} [2024-06-27 20:02:57,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-27 20:02:57,122 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 346 transitions, 3528 flow [2024-06-27 20:02:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:57,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:57,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 20:02:57,122 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:02:57,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1758945138, now seen corresponding path program 10 times [2024-06-27 20:02:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811148647] [2024-06-27 20:02:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:58,229 INFO 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 20:02:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:58,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811148647] [2024-06-27 20:02:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811148647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:58,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:02:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676768252] [2024-06-27 20:02:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:58,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:02:58,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:02:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:02:58,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:02:58,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 346 transitions, 3528 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:02:58,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:58,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:02:58,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:59,101 INFO L124 PetriNetUnfolderBase]: 1042/2058 cut-off events. [2024-06-27 20:02:59,101 INFO L125 PetriNetUnfolderBase]: For 935246/935246 co-relation queries the response was YES. [2024-06-27 20:02:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21568 conditions, 2058 events. 1042/2058 cut-off events. For 935246/935246 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 13209 event pairs, 248 based on Foata normal form. 2/2059 useless extension candidates. Maximal degree in co-relation 21368. Up to 1481 conditions per place. [2024-06-27 20:02:59,133 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 108 changer transitions 0/367 dead transitions. [2024-06-27 20:02:59,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 367 transitions, 4338 flow [2024-06-27 20:02:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 20:02:59,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 20:02:59,134 INFO L175 Difference]: Start difference. First operand has 479 places, 346 transitions, 3528 flow. Second operand 12 states and 145 transitions. [2024-06-27 20:02:59,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 367 transitions, 4338 flow [2024-06-27 20:03:02,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 367 transitions, 4112 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:02,625 INFO L231 Difference]: Finished difference. Result has 481 places, 347 transitions, 3550 flow [2024-06-27 20:03:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3550, PETRI_PLACES=481, PETRI_TRANSITIONS=347} [2024-06-27 20:03:02,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 450 predicate places. [2024-06-27 20:03:02,626 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 347 transitions, 3550 flow [2024-06-27 20:03:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:02,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:02,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 20:03:02,627 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:02,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1758656838, now seen corresponding path program 11 times [2024-06-27 20:03:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:02,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105173258] [2024-06-27 20:03:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:03,975 INFO 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 20:03:03,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105173258] [2024-06-27 20:03:03,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105173258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:03,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:03,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979215605] [2024-06-27 20:03:03,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:04,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:04,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 347 transitions, 3550 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:04,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:04,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:04,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:04,836 INFO L124 PetriNetUnfolderBase]: 1046/2066 cut-off events. [2024-06-27 20:03:04,836 INFO L125 PetriNetUnfolderBase]: For 946847/946847 co-relation queries the response was YES. [2024-06-27 20:03:04,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21697 conditions, 2066 events. 1046/2066 cut-off events. For 946847/946847 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13288 event pairs, 248 based on Foata normal form. 2/2067 useless extension candidates. Maximal degree in co-relation 21496. Up to 1465 conditions per place. [2024-06-27 20:03:04,870 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 108 changer transitions 0/368 dead transitions. [2024-06-27 20:03:04,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 368 transitions, 4362 flow [2024-06-27 20:03:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:03:04,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:03:04,871 INFO L175 Difference]: Start difference. First operand has 481 places, 347 transitions, 3550 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:03:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 368 transitions, 4362 flow [2024-06-27 20:03:08,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 368 transitions, 4124 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:08,381 INFO L231 Difference]: Finished difference. Result has 483 places, 348 transitions, 3562 flow [2024-06-27 20:03:08,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3312, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3562, PETRI_PLACES=483, PETRI_TRANSITIONS=348} [2024-06-27 20:03:08,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 20:03:08,382 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 348 transitions, 3562 flow [2024-06-27 20:03:08,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:08,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:08,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:08,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 20:03:08,382 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:08,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 341855134, now seen corresponding path program 12 times [2024-06-27 20:03:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:08,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574733131] [2024-06-27 20:03:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:08,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574733131] [2024-06-27 20:03:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574733131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704158607] [2024-06-27 20:03:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:09,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:09,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:09,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 348 transitions, 3562 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:09,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:09,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:09,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:10,190 INFO L124 PetriNetUnfolderBase]: 1050/2074 cut-off events. [2024-06-27 20:03:10,190 INFO L125 PetriNetUnfolderBase]: For 958590/958590 co-relation queries the response was YES. [2024-06-27 20:03:10,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21806 conditions, 2074 events. 1050/2074 cut-off events. For 958590/958590 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13370 event pairs, 248 based on Foata normal form. 2/2075 useless extension candidates. Maximal degree in co-relation 21604. Up to 1497 conditions per place. [2024-06-27 20:03:10,222 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 97 changer transitions 0/371 dead transitions. [2024-06-27 20:03:10,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 371 transitions, 4392 flow [2024-06-27 20:03:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 20:03:10,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 20:03:10,229 INFO L175 Difference]: Start difference. First operand has 483 places, 348 transitions, 3562 flow. Second operand 12 states and 154 transitions. [2024-06-27 20:03:10,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 371 transitions, 4392 flow [2024-06-27 20:03:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 371 transitions, 4152 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:13,961 INFO L231 Difference]: Finished difference. Result has 485 places, 349 transitions, 3552 flow [2024-06-27 20:03:13,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3552, PETRI_PLACES=485, PETRI_TRANSITIONS=349} [2024-06-27 20:03:13,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-27 20:03:13,962 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 349 transitions, 3552 flow [2024-06-27 20:03:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:13,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:13,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 20:03:13,962 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:13,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 481784094, now seen corresponding path program 13 times [2024-06-27 20:03:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88647347] [2024-06-27 20:03:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:15,431 INFO 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 20:03:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88647347] [2024-06-27 20:03:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88647347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:15,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612199791] [2024-06-27 20:03:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:15,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:15,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:15,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:15,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 349 transitions, 3552 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:15,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:15,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:15,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:16,460 INFO L124 PetriNetUnfolderBase]: 1054/2082 cut-off events. [2024-06-27 20:03:16,460 INFO L125 PetriNetUnfolderBase]: For 970293/970293 co-relation queries the response was YES. [2024-06-27 20:03:16,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21875 conditions, 2082 events. 1054/2082 cut-off events. For 970293/970293 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13429 event pairs, 250 based on Foata normal form. 2/2083 useless extension candidates. Maximal degree in co-relation 21672. Up to 1505 conditions per place. [2024-06-27 20:03:16,491 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 97 changer transitions 0/371 dead transitions. [2024-06-27 20:03:16,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 371 transitions, 4380 flow [2024-06-27 20:03:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:03:16,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:03:16,492 INFO L175 Difference]: Start difference. First operand has 485 places, 349 transitions, 3552 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:03:16,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 371 transitions, 4380 flow [2024-06-27 20:03:20,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 371 transitions, 4160 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:20,504 INFO L231 Difference]: Finished difference. Result has 487 places, 350 transitions, 3564 flow [2024-06-27 20:03:20,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3564, PETRI_PLACES=487, PETRI_TRANSITIONS=350} [2024-06-27 20:03:20,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-27 20:03:20,504 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 350 transitions, 3564 flow [2024-06-27 20:03:20,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:20,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:20,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:20,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 20:03:20,505 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:20,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1748825808, now seen corresponding path program 14 times [2024-06-27 20:03:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312907890] [2024-06-27 20:03:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:21,739 INFO 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 20:03:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312907890] [2024-06-27 20:03:21,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312907890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:21,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:21,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819324938] [2024-06-27 20:03:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:21,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:21,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 350 transitions, 3564 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:21,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:21,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:21,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:22,525 INFO L124 PetriNetUnfolderBase]: 1065/2103 cut-off events. [2024-06-27 20:03:22,525 INFO L125 PetriNetUnfolderBase]: For 1010663/1010663 co-relation queries the response was YES. [2024-06-27 20:03:22,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22444 conditions, 2103 events. 1065/2103 cut-off events. For 1010663/1010663 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13579 event pairs, 261 based on Foata normal form. 2/2104 useless extension candidates. Maximal degree in co-relation 22240. Up to 1251 conditions per place. [2024-06-27 20:03:22,559 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 120 changer transitions 0/373 dead transitions. [2024-06-27 20:03:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 373 transitions, 4760 flow [2024-06-27 20:03:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 20:03:22,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 20:03:22,560 INFO L175 Difference]: Start difference. First operand has 487 places, 350 transitions, 3564 flow. Second operand 12 states and 148 transitions. [2024-06-27 20:03:22,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 373 transitions, 4760 flow [2024-06-27 20:03:26,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 373 transitions, 4538 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:26,751 INFO L231 Difference]: Finished difference. Result has 489 places, 352 transitions, 3656 flow [2024-06-27 20:03:26,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3656, PETRI_PLACES=489, PETRI_TRANSITIONS=352} [2024-06-27 20:03:26,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-27 20:03:26,752 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 352 transitions, 3656 flow [2024-06-27 20:03:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:26,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:26,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 20:03:26,752 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:26,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1381974324, now seen corresponding path program 28 times [2024-06-27 20:03:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130189376] [2024-06-27 20:03:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:28,094 INFO 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 20:03:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130189376] [2024-06-27 20:03:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130189376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92227255] [2024-06-27 20:03:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:28,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:28,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 352 transitions, 3656 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:28,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:28,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:29,043 INFO L124 PetriNetUnfolderBase]: 1088/2152 cut-off events. [2024-06-27 20:03:29,043 INFO L125 PetriNetUnfolderBase]: For 1131701/1131701 co-relation queries the response was YES. [2024-06-27 20:03:29,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22907 conditions, 2152 events. 1088/2152 cut-off events. For 1131701/1131701 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13976 event pairs, 399 based on Foata normal form. 10/2161 useless extension candidates. Maximal degree in co-relation 22702. Up to 1745 conditions per place. [2024-06-27 20:03:29,077 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 313 selfloop transitions, 62 changer transitions 15/392 dead transitions. [2024-06-27 20:03:29,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 392 transitions, 4730 flow [2024-06-27 20:03:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:03:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:03:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 166 transitions. [2024-06-27 20:03:29,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-27 20:03:29,078 INFO L175 Difference]: Start difference. First operand has 489 places, 352 transitions, 3656 flow. Second operand 14 states and 166 transitions. [2024-06-27 20:03:29,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 392 transitions, 4730 flow [2024-06-27 20:03:32,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 392 transitions, 4531 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:32,767 INFO L231 Difference]: Finished difference. Result has 498 places, 351 transitions, 3598 flow [2024-06-27 20:03:32,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3598, PETRI_PLACES=498, PETRI_TRANSITIONS=351} [2024-06-27 20:03:32,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-27 20:03:32,768 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 351 transitions, 3598 flow [2024-06-27 20:03:32,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:32,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:32,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:32,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 20:03:32,768 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1552796724, now seen corresponding path program 29 times [2024-06-27 20:03:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:32,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440280967] [2024-06-27 20:03:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:33,728 INFO 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 20:03:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440280967] [2024-06-27 20:03:33,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440280967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219168348] [2024-06-27 20:03:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:33,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:33,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 351 transitions, 3598 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:33,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:33,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:33,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:34,780 INFO L124 PetriNetUnfolderBase]: 1103/2185 cut-off events. [2024-06-27 20:03:34,780 INFO L125 PetriNetUnfolderBase]: For 1254747/1254747 co-relation queries the response was YES. [2024-06-27 20:03:34,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24887 conditions, 2185 events. 1103/2185 cut-off events. For 1254747/1254747 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14183 event pairs, 252 based on Foata normal form. 8/2192 useless extension candidates. Maximal degree in co-relation 24677. Up to 1308 conditions per place. [2024-06-27 20:03:34,815 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 260 selfloop transitions, 110 changer transitions 10/382 dead transitions. [2024-06-27 20:03:34,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 382 transitions, 4946 flow [2024-06-27 20:03:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:03:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:03:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-27 20:03:34,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-27 20:03:34,816 INFO L175 Difference]: Start difference. First operand has 498 places, 351 transitions, 3598 flow. Second operand 13 states and 168 transitions. [2024-06-27 20:03:34,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 382 transitions, 4946 flow [2024-06-27 20:03:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 382 transitions, 4763 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:39,046 INFO L231 Difference]: Finished difference. Result has 497 places, 348 transitions, 3625 flow [2024-06-27 20:03:39,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3625, PETRI_PLACES=497, PETRI_TRANSITIONS=348} [2024-06-27 20:03:39,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 466 predicate places. [2024-06-27 20:03:39,046 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 348 transitions, 3625 flow [2024-06-27 20:03:39,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:39,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:39,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 20:03:39,047 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:39,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 571832044, now seen corresponding path program 15 times [2024-06-27 20:03:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122381660] [2024-06-27 20:03:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:40,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122381660] [2024-06-27 20:03:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122381660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142687918] [2024-06-27 20:03:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:40,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:40,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:40,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 348 transitions, 3625 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:40,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:40,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:40,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:41,133 INFO L124 PetriNetUnfolderBase]: 1078/2134 cut-off events. [2024-06-27 20:03:41,133 INFO L125 PetriNetUnfolderBase]: For 1144595/1144595 co-relation queries the response was YES. [2024-06-27 20:03:41,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24349 conditions, 2134 events. 1078/2134 cut-off events. For 1144595/1144595 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13751 event pairs, 273 based on Foata normal form. 2/2135 useless extension candidates. Maximal degree in co-relation 24141. Up to 1504 conditions per place. [2024-06-27 20:03:41,167 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 98 changer transitions 0/369 dead transitions. [2024-06-27 20:03:41,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 369 transitions, 4415 flow [2024-06-27 20:03:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:03:41,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:03:41,168 INFO L175 Difference]: Start difference. First operand has 497 places, 348 transitions, 3625 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:03:41,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 369 transitions, 4415 flow [2024-06-27 20:03:45,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 369 transitions, 4196 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:03:45,339 INFO L231 Difference]: Finished difference. Result has 493 places, 348 transitions, 3606 flow [2024-06-27 20:03:45,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3606, PETRI_PLACES=493, PETRI_TRANSITIONS=348} [2024-06-27 20:03:45,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-27 20:03:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 348 transitions, 3606 flow [2024-06-27 20:03:45,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:45,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:45,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:45,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-27 20:03:45,340 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash 335180090, now seen corresponding path program 30 times [2024-06-27 20:03:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873420982] [2024-06-27 20:03:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:46,684 INFO 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 20:03:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873420982] [2024-06-27 20:03:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873420982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:46,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184672447] [2024-06-27 20:03:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:46,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:46,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:46,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 348 transitions, 3606 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:46,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:46,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:46,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:47,775 INFO L124 PetriNetUnfolderBase]: 1103/2185 cut-off events. [2024-06-27 20:03:47,775 INFO L125 PetriNetUnfolderBase]: For 1225738/1225738 co-relation queries the response was YES. [2024-06-27 20:03:47,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24545 conditions, 2185 events. 1103/2185 cut-off events. For 1225738/1225738 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14190 event pairs, 420 based on Foata normal form. 10/2194 useless extension candidates. Maximal degree in co-relation 24339. Up to 1781 conditions per place. [2024-06-27 20:03:47,804 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 314 selfloop transitions, 61 changer transitions 11/388 dead transitions. [2024-06-27 20:03:47,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 388 transitions, 4659 flow [2024-06-27 20:03:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:03:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:03:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2024-06-27 20:03:47,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37276785714285715 [2024-06-27 20:03:47,805 INFO L175 Difference]: Start difference. First operand has 493 places, 348 transitions, 3606 flow. Second operand 14 states and 167 transitions. [2024-06-27 20:03:47,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 388 transitions, 4659 flow [2024-06-27 20:03:51,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 388 transitions, 4327 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-27 20:03:51,409 INFO L231 Difference]: Finished difference. Result has 498 places, 350 transitions, 3436 flow [2024-06-27 20:03:51,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3436, PETRI_PLACES=498, PETRI_TRANSITIONS=350} [2024-06-27 20:03:51,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-27 20:03:51,409 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 350 transitions, 3436 flow [2024-06-27 20:03:51,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:51,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:51,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:51,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-27 20:03:51,410 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:51,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:51,410 INFO L85 PathProgramCache]: Analyzing trace with hash 335175440, now seen corresponding path program 31 times [2024-06-27 20:03:51,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:51,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082299571] [2024-06-27 20:03:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:51,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:52,621 INFO 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 20:03:52,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:52,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082299571] [2024-06-27 20:03:52,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082299571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:03:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019848285] [2024-06-27 20:03:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:03:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:03:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:03:52,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 350 transitions, 3436 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:53,720 INFO L124 PetriNetUnfolderBase]: 1120/2224 cut-off events. [2024-06-27 20:03:53,720 INFO L125 PetriNetUnfolderBase]: For 1348303/1348303 co-relation queries the response was YES. [2024-06-27 20:03:53,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26279 conditions, 2224 events. 1120/2224 cut-off events. For 1348303/1348303 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14497 event pairs, 286 based on Foata normal form. 8/2231 useless extension candidates. Maximal degree in co-relation 26070. Up to 1549 conditions per place. [2024-06-27 20:03:53,753 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 274 selfloop transitions, 95 changer transitions 10/381 dead transitions. [2024-06-27 20:03:53,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 381 transitions, 4782 flow [2024-06-27 20:03:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:03:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:03:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-27 20:03:53,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2024-06-27 20:03:53,754 INFO L175 Difference]: Start difference. First operand has 498 places, 350 transitions, 3436 flow. Second operand 13 states and 170 transitions. [2024-06-27 20:03:53,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 381 transitions, 4782 flow [2024-06-27 20:03:57,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 381 transitions, 4681 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:57,651 INFO L231 Difference]: Finished difference. Result has 501 places, 345 transitions, 3478 flow [2024-06-27 20:03:57,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3478, PETRI_PLACES=501, PETRI_TRANSITIONS=345} [2024-06-27 20:03:57,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 470 predicate places. [2024-06-27 20:03:57,652 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 345 transitions, 3478 flow [2024-06-27 20:03:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:03:57,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:57,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:57,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-27 20:03:57,652 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:03:57,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1548208104, now seen corresponding path program 32 times [2024-06-27 20:03:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606279292] [2024-06-27 20:03:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606279292] [2024-06-27 20:03:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606279292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:58,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:58,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:58,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972672878] [2024-06-27 20:03:58,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:58,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:58,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:58,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:03:58,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 345 transitions, 3478 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:58,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:58,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:03:58,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:59,655 INFO L124 PetriNetUnfolderBase]: 1123/2229 cut-off events. [2024-06-27 20:03:59,655 INFO L125 PetriNetUnfolderBase]: For 1378026/1378026 co-relation queries the response was YES. [2024-06-27 20:03:59,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26482 conditions, 2229 events. 1123/2229 cut-off events. For 1378026/1378026 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14577 event pairs, 440 based on Foata normal form. 10/2238 useless extension candidates. Maximal degree in co-relation 26274. Up to 1780 conditions per place. [2024-06-27 20:03:59,688 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 296 selfloop transitions, 74 changer transitions 11/383 dead transitions. [2024-06-27 20:03:59,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 383 transitions, 4508 flow [2024-06-27 20:03:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:03:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:03:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-27 20:03:59,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-27 20:03:59,689 INFO L175 Difference]: Start difference. First operand has 501 places, 345 transitions, 3478 flow. Second operand 13 states and 159 transitions. [2024-06-27 20:03:59,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 383 transitions, 4508 flow [2024-06-27 20:04:03,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 383 transitions, 4312 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:04:03,188 INFO L231 Difference]: Finished difference. Result has 500 places, 347 transitions, 3472 flow [2024-06-27 20:04:03,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3472, PETRI_PLACES=500, PETRI_TRANSITIONS=347} [2024-06-27 20:04:03,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2024-06-27 20:04:03,189 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 347 transitions, 3472 flow [2024-06-27 20:04:03,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:03,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:03,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:03,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-27 20:04:03,189 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:03,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1548212754, now seen corresponding path program 33 times [2024-06-27 20:04:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401554218] [2024-06-27 20:04:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:04,239 INFO 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 20:04:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401554218] [2024-06-27 20:04:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401554218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:04,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195154088] [2024-06-27 20:04:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:04,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:04,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:04,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:04,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 347 transitions, 3472 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:04,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:04,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:04,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:05,244 INFO L124 PetriNetUnfolderBase]: 1150/2286 cut-off events. [2024-06-27 20:04:05,245 INFO L125 PetriNetUnfolderBase]: For 1468591/1468591 co-relation queries the response was YES. [2024-06-27 20:04:05,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28395 conditions, 2286 events. 1150/2286 cut-off events. For 1468591/1468591 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14998 event pairs, 301 based on Foata normal form. 8/2293 useless extension candidates. Maximal degree in co-relation 28186. Up to 1566 conditions per place. [2024-06-27 20:04:05,280 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 255 selfloop transitions, 113 changer transitions 10/380 dead transitions. [2024-06-27 20:04:05,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 380 transitions, 4829 flow [2024-06-27 20:04:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-27 20:04:05,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-27 20:04:05,281 INFO L175 Difference]: Start difference. First operand has 500 places, 347 transitions, 3472 flow. Second operand 13 states and 167 transitions. [2024-06-27 20:04:05,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 380 transitions, 4829 flow [2024-06-27 20:04:09,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 380 transitions, 4689 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:04:09,110 INFO L231 Difference]: Finished difference. Result has 505 places, 345 transitions, 3529 flow [2024-06-27 20:04:09,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3529, PETRI_PLACES=505, PETRI_TRANSITIONS=345} [2024-06-27 20:04:09,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 20:04:09,111 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 345 transitions, 3529 flow [2024-06-27 20:04:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:09,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:09,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-27 20:04:09,111 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:09,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1552681404, now seen corresponding path program 34 times [2024-06-27 20:04:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668096145] [2024-06-27 20:04:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668096145] [2024-06-27 20:04:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668096145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:10,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:10,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285586389] [2024-06-27 20:04:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:10,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:10,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 345 transitions, 3529 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:10,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:10,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:11,221 INFO L124 PetriNetUnfolderBase]: 1140/2268 cut-off events. [2024-06-27 20:04:11,221 INFO L125 PetriNetUnfolderBase]: For 1469880/1469880 co-relation queries the response was YES. [2024-06-27 20:04:11,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28418 conditions, 2268 events. 1140/2268 cut-off events. For 1469880/1469880 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14840 event pairs, 287 based on Foata normal form. 8/2275 useless extension candidates. Maximal degree in co-relation 28208. Up to 1498 conditions per place. [2024-06-27 20:04:11,258 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 110 changer transitions 7/377 dead transitions. [2024-06-27 20:04:11,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 377 transitions, 4867 flow [2024-06-27 20:04:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:04:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:04:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-27 20:04:11,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950892857142857 [2024-06-27 20:04:11,259 INFO L175 Difference]: Start difference. First operand has 505 places, 345 transitions, 3529 flow. Second operand 14 states and 177 transitions. [2024-06-27 20:04:11,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 377 transitions, 4867 flow [2024-06-27 20:04:15,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 377 transitions, 4634 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:04:15,459 INFO L231 Difference]: Finished difference. Result has 504 places, 343 transitions, 3507 flow [2024-06-27 20:04:15,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3507, PETRI_PLACES=504, PETRI_TRANSITIONS=343} [2024-06-27 20:04:15,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 473 predicate places. [2024-06-27 20:04:15,460 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 343 transitions, 3507 flow [2024-06-27 20:04:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:15,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:15,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:15,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-27 20:04:15,460 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:15,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1552676754, now seen corresponding path program 35 times [2024-06-27 20:04:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:15,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486781169] [2024-06-27 20:04:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:15,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:16,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486781169] [2024-06-27 20:04:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486781169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197229555] [2024-06-27 20:04:16,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:16,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:16,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 343 transitions, 3507 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:16,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:16,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:16,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:17,616 INFO L124 PetriNetUnfolderBase]: 1096/2184 cut-off events. [2024-06-27 20:04:17,617 INFO L125 PetriNetUnfolderBase]: For 1362384/1362384 co-relation queries the response was YES. [2024-06-27 20:04:17,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24550 conditions, 2184 events. 1096/2184 cut-off events. For 1362384/1362384 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14191 event pairs, 271 based on Foata normal form. 20/2203 useless extension candidates. Maximal degree in co-relation 24342. Up to 1498 conditions per place. [2024-06-27 20:04:17,651 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 246 selfloop transitions, 99 changer transitions 23/370 dead transitions. [2024-06-27 20:04:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 370 transitions, 4429 flow [2024-06-27 20:04:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:04:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:04:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-06-27 20:04:17,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2024-06-27 20:04:17,652 INFO L175 Difference]: Start difference. First operand has 504 places, 343 transitions, 3507 flow. Second operand 14 states and 171 transitions. [2024-06-27 20:04:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 370 transitions, 4429 flow [2024-06-27 20:04:21,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 370 transitions, 4209 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 20:04:21,241 INFO L231 Difference]: Finished difference. Result has 503 places, 330 transitions, 3362 flow [2024-06-27 20:04:21,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3362, PETRI_PLACES=503, PETRI_TRANSITIONS=330} [2024-06-27 20:04:21,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-27 20:04:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 330 transitions, 3362 flow [2024-06-27 20:04:21,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:21,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:21,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:21,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-27 20:04:21,242 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:21,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1709944064, now seen corresponding path program 16 times [2024-06-27 20:04:21,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:21,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70742359] [2024-06-27 20:04:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:21,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:22,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70742359] [2024-06-27 20:04:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70742359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:22,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:22,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:22,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96391003] [2024-06-27 20:04:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:22,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:22,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:22,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 330 transitions, 3362 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:22,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:22,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:22,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:23,517 INFO L124 PetriNetUnfolderBase]: 1044/2076 cut-off events. [2024-06-27 20:04:23,518 INFO L125 PetriNetUnfolderBase]: For 1104654/1104654 co-relation queries the response was YES. [2024-06-27 20:04:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23693 conditions, 2076 events. 1044/2076 cut-off events. For 1104654/1104654 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13319 event pairs, 424 based on Foata normal form. 2/2077 useless extension candidates. Maximal degree in co-relation 23486. Up to 1881 conditions per place. [2024-06-27 20:04:23,568 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2024-06-27 20:04:23,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 348 transitions, 4132 flow [2024-06-27 20:04:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 20:04:23,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 20:04:23,570 INFO L175 Difference]: Start difference. First operand has 503 places, 330 transitions, 3362 flow. Second operand 12 states and 137 transitions. [2024-06-27 20:04:23,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 348 transitions, 4132 flow [2024-06-27 20:04:27,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 348 transitions, 3888 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-27 20:04:27,157 INFO L231 Difference]: Finished difference. Result has 483 places, 331 transitions, 3246 flow [2024-06-27 20:04:27,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3246, PETRI_PLACES=483, PETRI_TRANSITIONS=331} [2024-06-27 20:04:27,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 20:04:27,158 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 331 transitions, 3246 flow [2024-06-27 20:04:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:27,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:27,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-27 20:04:27,159 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:27,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 930137786, now seen corresponding path program 17 times [2024-06-27 20:04:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:27,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839505129] [2024-06-27 20:04:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:28,186 INFO 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 20:04:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839505129] [2024-06-27 20:04:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839505129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:28,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:28,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033256981] [2024-06-27 20:04:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:28,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:28,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:28,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 331 transitions, 3246 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:28,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:28,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:28,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:29,001 INFO L124 PetriNetUnfolderBase]: 1048/2084 cut-off events. [2024-06-27 20:04:29,001 INFO L125 PetriNetUnfolderBase]: For 1026205/1026205 co-relation queries the response was YES. [2024-06-27 20:04:29,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 2084 events. 1048/2084 cut-off events. For 1026205/1026205 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13410 event pairs, 424 based on Foata normal form. 2/2085 useless extension candidates. Maximal degree in co-relation 22769. Up to 1867 conditions per place. [2024-06-27 20:04:29,036 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 45 changer transitions 0/349 dead transitions. [2024-06-27 20:04:29,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 349 transitions, 4018 flow [2024-06-27 20:04:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:04:29,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:04:29,037 INFO L175 Difference]: Start difference. First operand has 483 places, 331 transitions, 3246 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:04:29,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 349 transitions, 4018 flow [2024-06-27 20:04:32,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 349 transitions, 3900 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 20:04:32,708 INFO L231 Difference]: Finished difference. Result has 485 places, 332 transitions, 3260 flow [2024-06-27 20:04:32,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3260, PETRI_PLACES=485, PETRI_TRANSITIONS=332} [2024-06-27 20:04:32,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-27 20:04:32,709 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 332 transitions, 3260 flow [2024-06-27 20:04:32,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:32,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:32,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:32,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-27 20:04:32,710 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:32,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 309163406, now seen corresponding path program 18 times [2024-06-27 20:04:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085922444] [2024-06-27 20:04:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085922444] [2024-06-27 20:04:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085922444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894559109] [2024-06-27 20:04:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:34,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:34,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:34,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:34,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 332 transitions, 3260 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:34,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:34,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:34,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:34,945 INFO L124 PetriNetUnfolderBase]: 1060/2112 cut-off events. [2024-06-27 20:04:34,945 INFO L125 PetriNetUnfolderBase]: For 1107939/1107939 co-relation queries the response was YES. [2024-06-27 20:04:34,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23232 conditions, 2112 events. 1060/2112 cut-off events. For 1107939/1107939 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13616 event pairs, 418 based on Foata normal form. 8/2119 useless extension candidates. Maximal degree in co-relation 23031. Up to 1893 conditions per place. [2024-06-27 20:04:34,980 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 45 changer transitions 12/352 dead transitions. [2024-06-27 20:04:34,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 352 transitions, 4096 flow [2024-06-27 20:04:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 20:04:34,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 20:04:34,981 INFO L175 Difference]: Start difference. First operand has 485 places, 332 transitions, 3260 flow. Second operand 12 states and 138 transitions. [2024-06-27 20:04:34,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 352 transitions, 4096 flow [2024-06-27 20:04:38,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 352 transitions, 3974 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 20:04:38,946 INFO L231 Difference]: Finished difference. Result has 487 places, 329 transitions, 3206 flow [2024-06-27 20:04:38,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3206, PETRI_PLACES=487, PETRI_TRANSITIONS=329} [2024-06-27 20:04:38,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-27 20:04:38,946 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 329 transitions, 3206 flow [2024-06-27 20:04:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:38,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:38,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-27 20:04:38,947 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:38,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1276488704, now seen corresponding path program 36 times [2024-06-27 20:04:38,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:38,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118885569] [2024-06-27 20:04:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:38,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:40,089 INFO 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 20:04:40,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118885569] [2024-06-27 20:04:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118885569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657158904] [2024-06-27 20:04:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:40,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:40,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 329 transitions, 3206 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:41,109 INFO L124 PetriNetUnfolderBase]: 1081/2155 cut-off events. [2024-06-27 20:04:41,110 INFO L125 PetriNetUnfolderBase]: For 1253563/1253563 co-relation queries the response was YES. [2024-06-27 20:04:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25189 conditions, 2155 events. 1081/2155 cut-off events. For 1253563/1253563 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 13987 event pairs, 439 based on Foata normal form. 8/2162 useless extension candidates. Maximal degree in co-relation 24987. Up to 1868 conditions per place. [2024-06-27 20:04:41,144 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 306 selfloop transitions, 41 changer transitions 7/356 dead transitions. [2024-06-27 20:04:41,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 356 transitions, 4466 flow [2024-06-27 20:04:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-27 20:04:41,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-27 20:04:41,145 INFO L175 Difference]: Start difference. First operand has 487 places, 329 transitions, 3206 flow. Second operand 13 states and 157 transitions. [2024-06-27 20:04:41,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 356 transitions, 4466 flow [2024-06-27 20:04:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 356 transitions, 4368 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:04:44,930 INFO L231 Difference]: Finished difference. Result has 485 places, 327 transitions, 3186 flow [2024-06-27 20:04:44,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3186, PETRI_PLACES=485, PETRI_TRANSITIONS=327} [2024-06-27 20:04:44,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-27 20:04:44,931 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 327 transitions, 3186 flow [2024-06-27 20:04:44,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:44,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:44,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-27 20:04:44,931 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:44,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash 302488362, now seen corresponding path program 37 times [2024-06-27 20:04:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606406188] [2024-06-27 20:04:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:46,057 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 20:04:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:46,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606406188] [2024-06-27 20:04:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606406188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:46,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821844801] [2024-06-27 20:04:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:46,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:46,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 327 transitions, 3186 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:46,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:46,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:46,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:47,048 INFO L124 PetriNetUnfolderBase]: 1079/2153 cut-off events. [2024-06-27 20:04:47,048 INFO L125 PetriNetUnfolderBase]: For 1264815/1264815 co-relation queries the response was YES. [2024-06-27 20:04:47,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25170 conditions, 2153 events. 1079/2153 cut-off events. For 1264815/1264815 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13983 event pairs, 441 based on Foata normal form. 10/2162 useless extension candidates. Maximal degree in co-relation 24969. Up to 1927 conditions per place. [2024-06-27 20:04:47,082 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 288 selfloop transitions, 47 changer transitions 11/348 dead transitions. [2024-06-27 20:04:47,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 348 transitions, 4036 flow [2024-06-27 20:04:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-27 20:04:47,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-27 20:04:47,083 INFO L175 Difference]: Start difference. First operand has 485 places, 327 transitions, 3186 flow. Second operand 13 states and 147 transitions. [2024-06-27 20:04:47,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 348 transitions, 4036 flow [2024-06-27 20:04:50,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 348 transitions, 3952 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:04:50,752 INFO L231 Difference]: Finished difference. Result has 484 places, 324 transitions, 3183 flow [2024-06-27 20:04:50,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3183, PETRI_PLACES=484, PETRI_TRANSITIONS=324} [2024-06-27 20:04:50,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 20:04:50,753 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 324 transitions, 3183 flow [2024-06-27 20:04:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:50,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:50,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-27 20:04:50,754 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1283168398, now seen corresponding path program 19 times [2024-06-27 20:04:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313871156] [2024-06-27 20:04:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:52,064 INFO 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 20:04:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:52,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313871156] [2024-06-27 20:04:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313871156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401951925] [2024-06-27 20:04:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:52,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:52,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 324 transitions, 3183 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:52,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:52,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:52,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:52,992 INFO L124 PetriNetUnfolderBase]: 1067/2133 cut-off events. [2024-06-27 20:04:52,992 INFO L125 PetriNetUnfolderBase]: For 1218583/1218583 co-relation queries the response was YES. [2024-06-27 20:04:53,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25005 conditions, 2133 events. 1067/2133 cut-off events. For 1218583/1218583 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13817 event pairs, 445 based on Foata normal form. 8/2140 useless extension candidates. Maximal degree in co-relation 24805. Up to 1920 conditions per place. [2024-06-27 20:04:53,027 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 37 changer transitions 12/345 dead transitions. [2024-06-27 20:04:53,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 345 transitions, 4009 flow [2024-06-27 20:04:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:04:53,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-27 20:04:53,028 INFO L175 Difference]: Start difference. First operand has 484 places, 324 transitions, 3183 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:04:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 345 transitions, 4009 flow [2024-06-27 20:04:56,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 345 transitions, 3905 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:04:56,745 INFO L231 Difference]: Finished difference. Result has 481 places, 321 transitions, 3133 flow [2024-06-27 20:04:56,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3133, PETRI_PLACES=481, PETRI_TRANSITIONS=321} [2024-06-27 20:04:56,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 450 predicate places. [2024-06-27 20:04:56,746 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 321 transitions, 3133 flow [2024-06-27 20:04:56,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:56,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:56,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-27 20:04:56,746 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:04:56,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1276493354, now seen corresponding path program 38 times [2024-06-27 20:04:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:56,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579015974] [2024-06-27 20:04:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:57,864 INFO 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 20:04:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579015974] [2024-06-27 20:04:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579015974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:04:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706745433] [2024-06-27 20:04:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:04:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:04:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:04:58,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:04:58,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 321 transitions, 3133 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:04:58,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:58,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:04:58,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:58,779 INFO L124 PetriNetUnfolderBase]: 1034/2066 cut-off events. [2024-06-27 20:04:58,780 INFO L125 PetriNetUnfolderBase]: For 1111298/1111298 co-relation queries the response was YES. [2024-06-27 20:04:58,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22758 conditions, 2066 events. 1034/2066 cut-off events. For 1111298/1111298 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13291 event pairs, 430 based on Foata normal form. 10/2075 useless extension candidates. Maximal degree in co-relation 22559. Up to 1846 conditions per place. [2024-06-27 20:04:58,811 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 290 selfloop transitions, 35 changer transitions 16/343 dead transitions. [2024-06-27 20:04:58,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 343 transitions, 3973 flow [2024-06-27 20:04:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-27 20:04:58,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-27 20:04:58,812 INFO L175 Difference]: Start difference. First operand has 481 places, 321 transitions, 3133 flow. Second operand 13 states and 150 transitions. [2024-06-27 20:04:58,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 343 transitions, 3973 flow [2024-06-27 20:05:02,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 343 transitions, 3895 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:02,292 INFO L231 Difference]: Finished difference. Result has 479 places, 315 transitions, 3077 flow [2024-06-27 20:05:02,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3077, PETRI_PLACES=479, PETRI_TRANSITIONS=315} [2024-06-27 20:05:02,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-27 20:05:02,292 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 315 transitions, 3077 flow [2024-06-27 20:05:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:02,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:02,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:02,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-27 20:05:02,293 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:02,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1306815650, now seen corresponding path program 39 times [2024-06-27 20:05:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744023605] [2024-06-27 20:05:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:03,421 INFO 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 20:05:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744023605] [2024-06-27 20:05:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744023605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:03,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:03,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926314634] [2024-06-27 20:05:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:03,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:03,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 315 transitions, 3077 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:03,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:03,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:03,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:04,317 INFO L124 PetriNetUnfolderBase]: 1019/2037 cut-off events. [2024-06-27 20:05:04,317 INFO L125 PetriNetUnfolderBase]: For 1071105/1071105 co-relation queries the response was YES. [2024-06-27 20:05:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 2037 events. 1019/2037 cut-off events. For 1071105/1071105 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13062 event pairs, 418 based on Foata normal form. 8/2044 useless extension candidates. Maximal degree in co-relation 22269. Up to 1833 conditions per place. [2024-06-27 20:05:04,349 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 40 changer transitions 14/335 dead transitions. [2024-06-27 20:05:04,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 335 transitions, 3845 flow [2024-06-27 20:05:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:05:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:05:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-27 20:05:04,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-27 20:05:04,350 INFO L175 Difference]: Start difference. First operand has 479 places, 315 transitions, 3077 flow. Second operand 13 states and 144 transitions. [2024-06-27 20:05:04,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 335 transitions, 3845 flow [2024-06-27 20:05:07,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 335 transitions, 3743 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-27 20:05:07,723 INFO L231 Difference]: Finished difference. Result has 469 places, 310 transitions, 3023 flow [2024-06-27 20:05:07,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3023, PETRI_PLACES=469, PETRI_TRANSITIONS=310} [2024-06-27 20:05:07,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-27 20:05:07,724 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 310 transitions, 3023 flow [2024-06-27 20:05:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:07,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:07,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-27 20:05:07,724 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:07,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1135997900, now seen corresponding path program 40 times [2024-06-27 20:05:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482686932] [2024-06-27 20:05:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:08,692 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 20:05:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482686932] [2024-06-27 20:05:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482686932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839877637] [2024-06-27 20:05:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:08,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:08,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 310 transitions, 3023 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:08,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:08,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:08,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:09,654 INFO L124 PetriNetUnfolderBase]: 1039/2077 cut-off events. [2024-06-27 20:05:09,654 INFO L125 PetriNetUnfolderBase]: For 1149428/1149428 co-relation queries the response was YES. [2024-06-27 20:05:09,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24016 conditions, 2077 events. 1039/2077 cut-off events. For 1149428/1149428 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13303 event pairs, 435 based on Foata normal form. 8/2084 useless extension candidates. Maximal degree in co-relation 23821. Up to 1712 conditions per place. [2024-06-27 20:05:09,689 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 54 changer transitions 10/337 dead transitions. [2024-06-27 20:05:09,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 337 transitions, 4217 flow [2024-06-27 20:05:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:05:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:05:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-27 20:05:09,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-27 20:05:09,690 INFO L175 Difference]: Start difference. First operand has 469 places, 310 transitions, 3023 flow. Second operand 13 states and 153 transitions. [2024-06-27 20:05:09,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 337 transitions, 4217 flow [2024-06-27 20:05:12,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 337 transitions, 4107 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-27 20:05:12,594 INFO L231 Difference]: Finished difference. Result has 461 places, 307 transitions, 3025 flow [2024-06-27 20:05:12,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3025, PETRI_PLACES=461, PETRI_TRANSITIONS=307} [2024-06-27 20:05:12,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 20:05:12,595 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 307 transitions, 3025 flow [2024-06-27 20:05:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:12,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:12,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:12,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-27 20:05:12,596 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:12,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1080188888, now seen corresponding path program 20 times [2024-06-27 20:05:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857939080] [2024-06-27 20:05:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:13,588 INFO 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 20:05:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:13,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857939080] [2024-06-27 20:05:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857939080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:13,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260712336] [2024-06-27 20:05:13,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:13,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:13,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 307 transitions, 3025 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:13,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:13,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:13,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:14,365 INFO L124 PetriNetUnfolderBase]: 1028/2052 cut-off events. [2024-06-27 20:05:14,365 INFO L125 PetriNetUnfolderBase]: For 1050634/1050634 co-relation queries the response was YES. [2024-06-27 20:05:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23900 conditions, 2052 events. 1028/2052 cut-off events. For 1050634/1050634 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13116 event pairs, 448 based on Foata normal form. 2/2053 useless extension candidates. Maximal degree in co-relation 23709. Up to 1756 conditions per place. [2024-06-27 20:05:14,396 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 285 selfloop transitions, 40 changer transitions 0/327 dead transitions. [2024-06-27 20:05:14,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 327 transitions, 4095 flow [2024-06-27 20:05:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:05:14,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 20:05:14,397 INFO L175 Difference]: Start difference. First operand has 461 places, 307 transitions, 3025 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:05:14,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 327 transitions, 4095 flow [2024-06-27 20:05:17,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 327 transitions, 3987 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:05:17,393 INFO L231 Difference]: Finished difference. Result has 457 places, 309 transitions, 3085 flow [2024-06-27 20:05:17,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3085, PETRI_PLACES=457, PETRI_TRANSITIONS=309} [2024-06-27 20:05:17,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-27 20:05:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 309 transitions, 3085 flow [2024-06-27 20:05:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:17,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:17,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:17,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-27 20:05:17,394 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:17,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1653077080, now seen corresponding path program 21 times [2024-06-27 20:05:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390908265] [2024-06-27 20:05:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:17,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390908265] [2024-06-27 20:05:18,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390908265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:18,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:18,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662264246] [2024-06-27 20:05:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:18,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:18,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 309 transitions, 3085 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:18,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:18,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:18,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:19,495 INFO L124 PetriNetUnfolderBase]: 1032/2060 cut-off events. [2024-06-27 20:05:19,495 INFO L125 PetriNetUnfolderBase]: For 1023824/1023824 co-relation queries the response was YES. [2024-06-27 20:05:19,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23814 conditions, 2060 events. 1032/2060 cut-off events. For 1023824/1023824 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13175 event pairs, 448 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 23625. Up to 1889 conditions per place. [2024-06-27 20:05:19,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 35 changer transitions 0/328 dead transitions. [2024-06-27 20:05:19,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 328 transitions, 3825 flow [2024-06-27 20:05:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:05:19,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:05:19,528 INFO L175 Difference]: Start difference. First operand has 457 places, 309 transitions, 3085 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:05:19,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 328 transitions, 3825 flow [2024-06-27 20:05:22,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 328 transitions, 3729 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 20:05:22,654 INFO L231 Difference]: Finished difference. Result has 461 places, 310 transitions, 3105 flow [2024-06-27 20:05:22,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3105, PETRI_PLACES=461, PETRI_TRANSITIONS=310} [2024-06-27 20:05:22,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 20:05:22,654 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 310 transitions, 3105 flow [2024-06-27 20:05:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:22,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:22,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:22,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-27 20:05:22,655 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:22,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:22,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1534683244, now seen corresponding path program 22 times [2024-06-27 20:05:22,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:22,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061984766] [2024-06-27 20:05:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:23,744 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 20:05:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061984766] [2024-06-27 20:05:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061984766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179011838] [2024-06-27 20:05:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:23,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:23,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 310 transitions, 3105 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:23,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:23,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:23,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:24,526 INFO L124 PetriNetUnfolderBase]: 1036/2068 cut-off events. [2024-06-27 20:05:24,526 INFO L125 PetriNetUnfolderBase]: For 1037138/1037138 co-relation queries the response was YES. [2024-06-27 20:05:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23955 conditions, 2068 events. 1036/2068 cut-off events. For 1037138/1037138 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13264 event pairs, 448 based on Foata normal form. 2/2069 useless extension candidates. Maximal degree in co-relation 23764. Up to 1983 conditions per place. [2024-06-27 20:05:24,557 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 24 changer transitions 0/328 dead transitions. [2024-06-27 20:05:24,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 328 transitions, 3841 flow [2024-06-27 20:05:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 20:05:24,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-27 20:05:24,558 INFO L175 Difference]: Start difference. First operand has 461 places, 310 transitions, 3105 flow. Second operand 12 states and 131 transitions. [2024-06-27 20:05:24,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 328 transitions, 3841 flow [2024-06-27 20:05:27,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 328 transitions, 3743 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:27,458 INFO L231 Difference]: Finished difference. Result has 463 places, 311 transitions, 3101 flow [2024-06-27 20:05:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3101, PETRI_PLACES=463, PETRI_TRANSITIONS=311} [2024-06-27 20:05:27,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 432 predicate places. [2024-06-27 20:05:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 311 transitions, 3101 flow [2024-06-27 20:05:27,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:27,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:27,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-27 20:05:27,459 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:27,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1513145308, now seen corresponding path program 23 times [2024-06-27 20:05:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:27,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686316510] [2024-06-27 20:05:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:27,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:28,634 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 20:05:28,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686316510] [2024-06-27 20:05:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686316510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017165160] [2024-06-27 20:05:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:28,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:28,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:28,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 311 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:28,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:28,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:28,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:29,481 INFO L124 PetriNetUnfolderBase]: 1040/2076 cut-off events. [2024-06-27 20:05:29,481 INFO L125 PetriNetUnfolderBase]: For 1051245/1051245 co-relation queries the response was YES. [2024-06-27 20:05:29,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24066 conditions, 2076 events. 1040/2076 cut-off events. For 1051245/1051245 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13325 event pairs, 450 based on Foata normal form. 2/2077 useless extension candidates. Maximal degree in co-relation 23874. Up to 1883 conditions per place. [2024-06-27 20:05:29,512 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 292 selfloop transitions, 36 changer transitions 0/330 dead transitions. [2024-06-27 20:05:29,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 330 transitions, 3839 flow [2024-06-27 20:05:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 20:05:29,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 20:05:29,513 INFO L175 Difference]: Start difference. First operand has 463 places, 311 transitions, 3101 flow. Second operand 12 states and 141 transitions. [2024-06-27 20:05:29,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 330 transitions, 3839 flow [2024-06-27 20:05:32,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 330 transitions, 3755 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:32,294 INFO L231 Difference]: Finished difference. Result has 465 places, 312 transitions, 3131 flow [2024-06-27 20:05:32,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3131, PETRI_PLACES=465, PETRI_TRANSITIONS=312} [2024-06-27 20:05:32,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 434 predicate places. [2024-06-27 20:05:32,295 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 312 transitions, 3131 flow [2024-06-27 20:05:32,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:32,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:32,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:32,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-27 20:05:32,295 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:32,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1276337942, now seen corresponding path program 41 times [2024-06-27 20:05:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101202163] [2024-06-27 20:05:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:33,361 INFO 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 20:05:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101202163] [2024-06-27 20:05:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101202163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149443141] [2024-06-27 20:05:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:33,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:33,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 312 transitions, 3131 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:33,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:33,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:33,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:34,396 INFO L124 PetriNetUnfolderBase]: 1056/2112 cut-off events. [2024-06-27 20:05:34,396 INFO L125 PetriNetUnfolderBase]: For 1154369/1154369 co-relation queries the response was YES. [2024-06-27 20:05:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24381 conditions, 2112 events. 1056/2112 cut-off events. For 1154369/1154369 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13625 event pairs, 450 based on Foata normal form. 10/2121 useless extension candidates. Maximal degree in co-relation 24188. Up to 1868 conditions per place. [2024-06-27 20:05:34,426 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 267 selfloop transitions, 52 changer transitions 14/335 dead transitions. [2024-06-27 20:05:34,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 335 transitions, 3949 flow [2024-06-27 20:05:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:05:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:05:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-06-27 20:05:34,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35044642857142855 [2024-06-27 20:05:34,427 INFO L175 Difference]: Start difference. First operand has 465 places, 312 transitions, 3131 flow. Second operand 14 states and 157 transitions. [2024-06-27 20:05:34,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 335 transitions, 3949 flow [2024-06-27 20:05:37,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 335 transitions, 3847 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:37,515 INFO L231 Difference]: Finished difference. Result has 469 places, 306 transitions, 3101 flow [2024-06-27 20:05:37,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3101, PETRI_PLACES=469, PETRI_TRANSITIONS=306} [2024-06-27 20:05:37,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-27 20:05:37,515 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 306 transitions, 3101 flow [2024-06-27 20:05:37,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:37,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:37,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:37,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-27 20:05:37,516 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:37,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1280801942, now seen corresponding path program 42 times [2024-06-27 20:05:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676834923] [2024-06-27 20:05:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:38,497 INFO 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 20:05:38,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:38,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676834923] [2024-06-27 20:05:38,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676834923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:38,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353575283] [2024-06-27 20:05:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:38,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:38,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:38,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:38,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 306 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:38,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:38,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:38,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:39,432 INFO L124 PetriNetUnfolderBase]: 1036/2080 cut-off events. [2024-06-27 20:05:39,433 INFO L125 PetriNetUnfolderBase]: For 1144549/1144549 co-relation queries the response was YES. [2024-06-27 20:05:39,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24254 conditions, 2080 events. 1036/2080 cut-off events. For 1144549/1144549 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13444 event pairs, 436 based on Foata normal form. 8/2087 useless extension candidates. Maximal degree in co-relation 24060. Up to 1834 conditions per place. [2024-06-27 20:05:39,461 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 253 selfloop transitions, 59 changer transitions 13/327 dead transitions. [2024-06-27 20:05:39,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 327 transitions, 3853 flow [2024-06-27 20:05:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:05:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:05:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 20:05:39,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-27 20:05:39,462 INFO L175 Difference]: Start difference. First operand has 469 places, 306 transitions, 3101 flow. Second operand 13 states and 146 transitions. [2024-06-27 20:05:39,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 327 transitions, 3853 flow [2024-06-27 20:05:42,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 327 transitions, 3737 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 20:05:42,736 INFO L231 Difference]: Finished difference. Result has 464 places, 302 transitions, 3073 flow [2024-06-27 20:05:42,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3073, PETRI_PLACES=464, PETRI_TRANSITIONS=302} [2024-06-27 20:05:42,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-27 20:05:42,737 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 302 transitions, 3073 flow [2024-06-27 20:05:42,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:42,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:42,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:42,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-27 20:05:42,737 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:42,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash -894408856, now seen corresponding path program 24 times [2024-06-27 20:05:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005158655] [2024-06-27 20:05:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:42,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:43,857 INFO 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 20:05:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005158655] [2024-06-27 20:05:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005158655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:43,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33229886] [2024-06-27 20:05:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:44,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:44,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 302 transitions, 3073 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:44,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:44,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:44,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:44,861 INFO L124 PetriNetUnfolderBase]: 1020/2044 cut-off events. [2024-06-27 20:05:44,861 INFO L125 PetriNetUnfolderBase]: For 1051509/1051509 co-relation queries the response was YES. [2024-06-27 20:05:44,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 2044 events. 1020/2044 cut-off events. For 1051509/1051509 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13120 event pairs, 448 based on Foata normal form. 2/2045 useless extension candidates. Maximal degree in co-relation 23652. Up to 1876 conditions per place. [2024-06-27 20:05:44,889 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 36 changer transitions 0/320 dead transitions. [2024-06-27 20:05:44,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 320 transitions, 3791 flow [2024-06-27 20:05:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 20:05:44,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 20:05:44,890 INFO L175 Difference]: Start difference. First operand has 464 places, 302 transitions, 3073 flow. Second operand 12 states and 136 transitions. [2024-06-27 20:05:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 320 transitions, 3791 flow [2024-06-27 20:05:48,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 320 transitions, 3661 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:05:48,011 INFO L231 Difference]: Finished difference. Result has 457 places, 303 transitions, 3059 flow [2024-06-27 20:05:48,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3059, PETRI_PLACES=457, PETRI_TRANSITIONS=303} [2024-06-27 20:05:48,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-27 20:05:48,012 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 303 transitions, 3059 flow [2024-06-27 20:05:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:48,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:48,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-27 20:05:48,012 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:48,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:48,012 INFO L85 PathProgramCache]: Analyzing trace with hash -894120556, now seen corresponding path program 25 times [2024-06-27 20:05:48,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:48,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559124554] [2024-06-27 20:05:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:48,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559124554] [2024-06-27 20:05:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559124554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:49,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:49,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:49,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37084035] [2024-06-27 20:05:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:49,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:49,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 303 transitions, 3059 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:49,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:49,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:49,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:50,018 INFO L124 PetriNetUnfolderBase]: 1024/2052 cut-off events. [2024-06-27 20:05:50,018 INFO L125 PetriNetUnfolderBase]: For 1025555/1025555 co-relation queries the response was YES. [2024-06-27 20:05:50,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23595 conditions, 2052 events. 1024/2052 cut-off events. For 1025555/1025555 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13160 event pairs, 450 based on Foata normal form. 2/2053 useless extension candidates. Maximal degree in co-relation 23406. Up to 1845 conditions per place. [2024-06-27 20:05:50,044 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 38 changer transitions 0/322 dead transitions. [2024-06-27 20:05:50,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 322 transitions, 4081 flow [2024-06-27 20:05:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:05:50,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:05:50,045 INFO L175 Difference]: Start difference. First operand has 457 places, 303 transitions, 3059 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:05:50,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 322 transitions, 4081 flow [2024-06-27 20:05:52,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 322 transitions, 3977 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:52,576 INFO L231 Difference]: Finished difference. Result has 459 places, 304 transitions, 3075 flow [2024-06-27 20:05:52,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3075, PETRI_PLACES=459, PETRI_TRANSITIONS=304} [2024-06-27 20:05:52,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-27 20:05:52,577 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 304 transitions, 3075 flow [2024-06-27 20:05:52,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:52,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:52,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:52,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-27 20:05:52,577 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:52,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1136113220, now seen corresponding path program 43 times [2024-06-27 20:05:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033563160] [2024-06-27 20:05:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:52,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033563160] [2024-06-27 20:05:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033563160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:53,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:53,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697675944] [2024-06-27 20:05:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:53,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 304 transitions, 3075 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:53,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:53,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:54,548 INFO L124 PetriNetUnfolderBase]: 1036/2080 cut-off events. [2024-06-27 20:05:54,548 INFO L125 PetriNetUnfolderBase]: For 1103106/1103106 co-relation queries the response was YES. [2024-06-27 20:05:54,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 2080 events. 1036/2080 cut-off events. For 1103106/1103106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13397 event pairs, 448 based on Foata normal form. 8/2087 useless extension candidates. Maximal degree in co-relation 23596. Up to 1864 conditions per place. [2024-06-27 20:05:54,574 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 265 selfloop transitions, 44 changer transitions 14/325 dead transitions. [2024-06-27 20:05:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 325 transitions, 3819 flow [2024-06-27 20:05:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:05:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:05:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-27 20:05:54,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-27 20:05:54,575 INFO L175 Difference]: Start difference. First operand has 459 places, 304 transitions, 3075 flow. Second operand 13 states and 145 transitions. [2024-06-27 20:05:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 325 transitions, 3819 flow [2024-06-27 20:05:57,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 325 transitions, 3699 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 20:05:57,167 INFO L231 Difference]: Finished difference. Result has 462 places, 298 transitions, 2999 flow [2024-06-27 20:05:57,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2999, PETRI_PLACES=462, PETRI_TRANSITIONS=298} [2024-06-27 20:05:57,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-27 20:05:57,167 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 298 transitions, 2999 flow [2024-06-27 20:05:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:57,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:57,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:57,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-27 20:05:57,168 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:05:57,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1264317538, now seen corresponding path program 26 times [2024-06-27 20:05:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429612839] [2024-06-27 20:05:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:58,447 INFO 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 20:05:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429612839] [2024-06-27 20:05:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429612839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:05:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673684759] [2024-06-27 20:05:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:58,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:05:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:05:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:05:58,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:05:58,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 298 transitions, 2999 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:05:58,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:58,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:05:58,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:59,392 INFO L124 PetriNetUnfolderBase]: 1019/2045 cut-off events. [2024-06-27 20:05:59,392 INFO L125 PetriNetUnfolderBase]: For 1089446/1089446 co-relation queries the response was YES. [2024-06-27 20:05:59,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23349 conditions, 2045 events. 1019/2045 cut-off events. For 1089446/1089446 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13132 event pairs, 451 based on Foata normal form. 8/2052 useless extension candidates. Maximal degree in co-relation 23158. Up to 1859 conditions per place. [2024-06-27 20:05:59,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 31 changer transitions 12/318 dead transitions. [2024-06-27 20:05:59,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 318 transitions, 3723 flow [2024-06-27 20:05:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:05:59,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 20:05:59,419 INFO L175 Difference]: Start difference. First operand has 462 places, 298 transitions, 2999 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:05:59,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 318 transitions, 3723 flow [2024-06-27 20:06:02,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 318 transitions, 3585 flow, removed 25 selfloop flow, removed 15 redundant places. [2024-06-27 20:06:02,505 INFO L231 Difference]: Finished difference. Result has 451 places, 294 transitions, 2897 flow [2024-06-27 20:06:02,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2897, PETRI_PLACES=451, PETRI_TRANSITIONS=294} [2024-06-27 20:06:02,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-27 20:06:02,506 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 294 transitions, 2897 flow [2024-06-27 20:06:02,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:02,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:02,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-27 20:06:02,506 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:02,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1270992582, now seen corresponding path program 44 times [2024-06-27 20:06:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:02,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294385831] [2024-06-27 20:06:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:02,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:03,609 INFO 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 20:06:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294385831] [2024-06-27 20:06:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294385831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:03,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595651210] [2024-06-27 20:06:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:03,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:03,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 294 transitions, 2897 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:04,604 INFO L124 PetriNetUnfolderBase]: 1015/2037 cut-off events. [2024-06-27 20:06:04,604 INFO L125 PetriNetUnfolderBase]: For 1044162/1044162 co-relation queries the response was YES. [2024-06-27 20:06:04,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 2037 events. 1015/2037 cut-off events. For 1044162/1044162 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13062 event pairs, 453 based on Foata normal form. 10/2046 useless extension candidates. Maximal degree in co-relation 22588. Up to 1844 conditions per place. [2024-06-27 20:06:04,630 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 270 selfloop transitions, 33 changer transitions 11/316 dead transitions. [2024-06-27 20:06:04,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 316 transitions, 3665 flow [2024-06-27 20:06:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:06:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:06:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-27 20:06:04,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-27 20:06:04,631 INFO L175 Difference]: Start difference. First operand has 451 places, 294 transitions, 2897 flow. Second operand 13 states and 148 transitions. [2024-06-27 20:06:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 316 transitions, 3665 flow [2024-06-27 20:06:07,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 316 transitions, 3595 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:06:07,623 INFO L231 Difference]: Finished difference. Result has 448 places, 291 transitions, 2878 flow [2024-06-27 20:06:07,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2878, PETRI_PLACES=448, PETRI_TRANSITIONS=291} [2024-06-27 20:06:07,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-27 20:06:07,623 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 291 transitions, 2878 flow [2024-06-27 20:06:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:07,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:07,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:07,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-27 20:06:07,624 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:07,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1130777160, now seen corresponding path program 45 times [2024-06-27 20:06:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:07,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683410129] [2024-06-27 20:06:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:08,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683410129] [2024-06-27 20:06:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683410129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802165176] [2024-06-27 20:06:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:08,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:08,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:08,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 291 transitions, 2878 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:08,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:08,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:08,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:09,707 INFO L124 PetriNetUnfolderBase]: 1003/2017 cut-off events. [2024-06-27 20:06:09,707 INFO L125 PetriNetUnfolderBase]: For 1008228/1008228 co-relation queries the response was YES. [2024-06-27 20:06:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22543 conditions, 2017 events. 1003/2017 cut-off events. For 1008228/1008228 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12949 event pairs, 451 based on Foata normal form. 8/2024 useless extension candidates. Maximal degree in co-relation 22358. Up to 1834 conditions per place. [2024-06-27 20:06:09,732 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 267 selfloop transitions, 29 changer transitions 14/312 dead transitions. [2024-06-27 20:06:09,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 312 transitions, 3596 flow [2024-06-27 20:06:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:06:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:06:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-27 20:06:09,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-27 20:06:09,733 INFO L175 Difference]: Start difference. First operand has 448 places, 291 transitions, 2878 flow. Second operand 13 states and 145 transitions. [2024-06-27 20:06:09,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 312 transitions, 3596 flow [2024-06-27 20:06:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 312 transitions, 3520 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:06:12,541 INFO L231 Difference]: Finished difference. Result has 446 places, 286 transitions, 2820 flow [2024-06-27 20:06:12,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2820, PETRI_PLACES=446, PETRI_TRANSITIONS=286} [2024-06-27 20:06:12,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-27 20:06:12,541 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 286 transitions, 2820 flow [2024-06-27 20:06:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:12,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:12,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-27 20:06:12,542 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1888002156, now seen corresponding path program 27 times [2024-06-27 20:06:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595338467] [2024-06-27 20:06:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:14,036 INFO 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 20:06:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595338467] [2024-06-27 20:06:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595338467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:14,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:14,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693067806] [2024-06-27 20:06:14,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:14,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:14,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 286 transitions, 2820 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:14,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:14,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:14,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:14,931 INFO L124 PetriNetUnfolderBase]: 994/1998 cut-off events. [2024-06-27 20:06:14,932 INFO L125 PetriNetUnfolderBase]: For 992216/992216 co-relation queries the response was YES. [2024-06-27 20:06:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22322 conditions, 1998 events. 994/1998 cut-off events. For 992216/992216 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12764 event pairs, 453 based on Foata normal form. 8/2005 useless extension candidates. Maximal degree in co-relation 22138. Up to 1856 conditions per place. [2024-06-27 20:06:14,959 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 267 selfloop transitions, 25 changer transitions 12/306 dead transitions. [2024-06-27 20:06:14,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 306 transitions, 3554 flow [2024-06-27 20:06:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 20:06:14,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 20:06:14,960 INFO L175 Difference]: Start difference. First operand has 446 places, 286 transitions, 2820 flow. Second operand 12 states and 135 transitions. [2024-06-27 20:06:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 306 transitions, 3554 flow [2024-06-27 20:06:17,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 306 transitions, 3466 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-27 20:06:17,940 INFO L231 Difference]: Finished difference. Result has 435 places, 283 transitions, 2757 flow [2024-06-27 20:06:17,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2757, PETRI_PLACES=435, PETRI_TRANSITIONS=283} [2024-06-27 20:06:17,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-27 20:06:17,941 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 283 transitions, 2757 flow [2024-06-27 20:06:17,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:17,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:17,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:17,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-27 20:06:17,941 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:17,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:17,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1694825304, now seen corresponding path program 28 times [2024-06-27 20:06:17,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:17,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187544394] [2024-06-27 20:06:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:17,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:18,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:18,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187544394] [2024-06-27 20:06:18,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187544394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:18,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:18,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:18,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493724550] [2024-06-27 20:06:18,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:18,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:18,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:19,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:19,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 283 transitions, 2757 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:19,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:19,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:19,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:19,918 INFO L124 PetriNetUnfolderBase]: 976/1960 cut-off events. [2024-06-27 20:06:19,919 INFO L125 PetriNetUnfolderBase]: For 899233/899233 co-relation queries the response was YES. [2024-06-27 20:06:19,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21735 conditions, 1960 events. 976/1960 cut-off events. For 899233/899233 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12461 event pairs, 445 based on Foata normal form. 2/1961 useless extension candidates. Maximal degree in co-relation 21554. Up to 1887 conditions per place. [2024-06-27 20:06:19,942 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 29 changer transitions 0/300 dead transitions. [2024-06-27 20:06:19,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 300 transitions, 3437 flow [2024-06-27 20:06:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 20:06:19,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 20:06:19,943 INFO L175 Difference]: Start difference. First operand has 435 places, 283 transitions, 2757 flow. Second operand 12 states and 129 transitions. [2024-06-27 20:06:19,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 300 transitions, 3437 flow [2024-06-27 20:06:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 300 transitions, 3383 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:06:22,771 INFO L231 Difference]: Finished difference. Result has 432 places, 284 transitions, 2810 flow [2024-06-27 20:06:22,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2810, PETRI_PLACES=432, PETRI_TRANSITIONS=284} [2024-06-27 20:06:22,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-27 20:06:22,772 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 284 transitions, 2810 flow [2024-06-27 20:06:22,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:22,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:22,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-27 20:06:22,772 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:22,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1304994634, now seen corresponding path program 29 times [2024-06-27 20:06:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115775557] [2024-06-27 20:06:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:23,802 INFO 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 20:06:23,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:23,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115775557] [2024-06-27 20:06:23,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115775557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:23,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852224678] [2024-06-27 20:06:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:23,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:24,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:24,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 284 transitions, 2810 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:24,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:24,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:24,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:24,739 INFO L124 PetriNetUnfolderBase]: 980/1968 cut-off events. [2024-06-27 20:06:24,739 INFO L125 PetriNetUnfolderBase]: For 887455/887455 co-relation queries the response was YES. [2024-06-27 20:06:24,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21768 conditions, 1968 events. 980/1968 cut-off events. For 887455/887455 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12524 event pairs, 455 based on Foata normal form. 2/1969 useless extension candidates. Maximal degree in co-relation 21588. Up to 1891 conditions per place. [2024-06-27 20:06:24,767 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 22 changer transitions 0/302 dead transitions. [2024-06-27 20:06:24,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 302 transitions, 3498 flow [2024-06-27 20:06:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 20:06:24,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-27 20:06:24,768 INFO L175 Difference]: Start difference. First operand has 432 places, 284 transitions, 2810 flow. Second operand 12 states and 131 transitions. [2024-06-27 20:06:24,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 302 transitions, 3498 flow [2024-06-27 20:06:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 302 transitions, 3403 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 20:06:27,425 INFO L231 Difference]: Finished difference. Result has 434 places, 285 transitions, 2809 flow [2024-06-27 20:06:27,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2809, PETRI_PLACES=434, PETRI_TRANSITIONS=285} [2024-06-27 20:06:27,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-27 20:06:27,426 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 285 transitions, 2809 flow [2024-06-27 20:06:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:27,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-27 20:06:27,426 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:27,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1831669902, now seen corresponding path program 30 times [2024-06-27 20:06:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004491553] [2024-06-27 20:06:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:28,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:28,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004491553] [2024-06-27 20:06:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004491553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803485707] [2024-06-27 20:06:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:28,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:28,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:28,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:28,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 285 transitions, 2809 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:28,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:28,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:29,458 INFO L124 PetriNetUnfolderBase]: 988/1984 cut-off events. [2024-06-27 20:06:29,458 INFO L125 PetriNetUnfolderBase]: For 900394/900394 co-relation queries the response was YES. [2024-06-27 20:06:29,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21901 conditions, 1984 events. 988/1984 cut-off events. For 900394/900394 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12653 event pairs, 453 based on Foata normal form. 2/1985 useless extension candidates. Maximal degree in co-relation 21720. Up to 1914 conditions per place. [2024-06-27 20:06:29,487 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 280 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2024-06-27 20:06:29,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 303 transitions, 3501 flow [2024-06-27 20:06:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 20:06:29,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 20:06:29,488 INFO L175 Difference]: Start difference. First operand has 434 places, 285 transitions, 2809 flow. Second operand 12 states and 129 transitions. [2024-06-27 20:06:29,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 303 transitions, 3501 flow [2024-06-27 20:06:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 303 transitions, 3417 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 20:06:32,423 INFO L231 Difference]: Finished difference. Result has 437 places, 287 transitions, 2829 flow [2024-06-27 20:06:32,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2829, PETRI_PLACES=437, PETRI_TRANSITIONS=287} [2024-06-27 20:06:32,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-27 20:06:32,424 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 287 transitions, 2829 flow [2024-06-27 20:06:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:32,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:32,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-27 20:06:32,424 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:32,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1887713856, now seen corresponding path program 31 times [2024-06-27 20:06:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:32,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961955704] [2024-06-27 20:06:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:33,537 INFO 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 20:06:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961955704] [2024-06-27 20:06:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961955704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:33,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:33,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138004464] [2024-06-27 20:06:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:33,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:33,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:33,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:33,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 287 transitions, 2829 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:33,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:33,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:33,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:34,337 INFO L124 PetriNetUnfolderBase]: 992/1992 cut-off events. [2024-06-27 20:06:34,337 INFO L125 PetriNetUnfolderBase]: For 913437/913437 co-relation queries the response was YES. [2024-06-27 20:06:34,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22045 conditions, 1992 events. 992/1992 cut-off events. For 913437/913437 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12707 event pairs, 459 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 21862. Up to 1907 conditions per place. [2024-06-27 20:06:34,366 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 22 changer transitions 0/304 dead transitions. [2024-06-27 20:06:34,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 304 transitions, 3519 flow [2024-06-27 20:06:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 20:06:34,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 20:06:34,367 INFO L175 Difference]: Start difference. First operand has 437 places, 287 transitions, 2829 flow. Second operand 12 states and 129 transitions. [2024-06-27 20:06:34,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 304 transitions, 3519 flow [2024-06-27 20:06:37,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 304 transitions, 3439 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:06:37,078 INFO L231 Difference]: Finished difference. Result has 440 places, 288 transitions, 2847 flow [2024-06-27 20:06:37,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2847, PETRI_PLACES=440, PETRI_TRANSITIONS=288} [2024-06-27 20:06:37,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-27 20:06:37,078 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 288 transitions, 2847 flow [2024-06-27 20:06:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:37,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:37,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:37,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-27 20:06:37,079 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1972178274, now seen corresponding path program 32 times [2024-06-27 20:06:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361692415] [2024-06-27 20:06:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361692415] [2024-06-27 20:06:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361692415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:06:38,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092203851] [2024-06-27 20:06:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:06:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:06:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:06:38,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:38,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 288 transitions, 2847 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:38,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:38,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:38,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:38,958 INFO L124 PetriNetUnfolderBase]: 1003/2013 cut-off events. [2024-06-27 20:06:38,958 INFO L125 PetriNetUnfolderBase]: For 948036/948036 co-relation queries the response was YES. [2024-06-27 20:06:38,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22632 conditions, 2013 events. 1003/2013 cut-off events. For 948036/948036 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12883 event pairs, 456 based on Foata normal form. 2/2014 useless extension candidates. Maximal degree in co-relation 22448. Up to 1865 conditions per place. [2024-06-27 20:06:38,988 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 33 changer transitions 0/307 dead transitions. [2024-06-27 20:06:38,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 307 transitions, 3883 flow [2024-06-27 20:06:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:06:38,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 20:06:38,989 INFO L175 Difference]: Start difference. First operand has 440 places, 288 transitions, 2847 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:06:38,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 307 transitions, 3883 flow [2024-06-27 20:06:41,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 307 transitions, 3795 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 20:06:41,465 INFO L231 Difference]: Finished difference. Result has 442 places, 290 transitions, 2932 flow [2024-06-27 20:06:41,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2759, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2932, PETRI_PLACES=442, PETRI_TRANSITIONS=290} [2024-06-27 20:06:41,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-27 20:06:41,466 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 290 transitions, 2932 flow [2024-06-27 20:06:41,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 20:06:41,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:41,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-27 20:06:41,466 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:06:41,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1686544150, now seen corresponding path program 46 times [2024-06-27 20:06:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110544173] [2024-06-27 20:06:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110544173] [2024-06-27 20:06:42,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110544173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:42,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:42,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:42,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970430119] [2024-06-27 20:06:42,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:42,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 20:06:42,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 290 transitions, 2932 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:42,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:42,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 20:06:42,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:43,526 INFO L124 PetriNetUnfolderBase]: 1005/2023 cut-off events. [2024-06-27 20:06:43,526 INFO L125 PetriNetUnfolderBase]: For 999125/999125 co-relation queries the response was YES. [2024-06-27 20:06:43,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22155 conditions, 2023 events. 1005/2023 cut-off events. For 999125/999125 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12974 event pairs, 458 based on Foata normal form. 10/2032 useless extension candidates. Maximal degree in co-relation 21970. Up to 1906 conditions per place. [2024-06-27 20:06:43,556 INFO L140 encePairwiseOnDemand]: 17/32 looper letters, 271 selfloop transitions, 28 changer transitions 12/313 dead transitions. [2024-06-27 20:06:43,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 313 transitions, 3688 flow [2024-06-27 20:06:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:06:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:06:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-06-27 20:06:43,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33705357142857145 [2024-06-27 20:06:43,557 INFO L175 Difference]: Start difference. First operand has 442 places, 290 transitions, 2932 flow. Second operand 14 states and 151 transitions. [2024-06-27 20:06:43,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 313 transitions, 3688 flow Killed by 15