./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-array-int-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/chl-array-int-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-array-int-trans.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:46:28,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:46:28,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:46:28,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:46:28,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:46:28,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:46:28,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:46:28,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:46:28,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:46:28,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:46:28,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:46:28,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:46:28,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:46:28,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:46:28,808 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:46:28,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:46:28,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:46:28,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:46:28,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:46:28,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:46:28,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:46:28,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:46:28,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:46:28,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:46:28,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:46:28,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:46:28,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:46:28,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:46:28,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:46:28,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:46:28,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:46:28,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:46:28,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:28,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:46:28,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:46:28,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:46:28,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:46:28,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:46:28,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:46:28,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:46:28,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:46:28,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:46:28,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:46:28,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:46:29,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:46:29,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:46:29,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:46:29,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:46:29,059 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:46:29,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2024-01-31 16:46:30,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:46:30,431 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:46:30,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2024-01-31 16:46:30,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255bde83b/1799995bdf3142189c61bc38f5372ee3/FLAGff7e16e5b [2024-01-31 16:46:30,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255bde83b/1799995bdf3142189c61bc38f5372ee3 [2024-01-31 16:46:30,458 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:46:30,460 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:46:30,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-array-int-trans.wvr.yml/witness.yml [2024-01-31 16:46:30,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:46:30,599 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:46:30,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:30,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:46:30,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:46:30,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:30" (1/2) ... [2024-01-31 16:46:30,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a799913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:30, skipping insertion in model container [2024-01-31 16:46:30,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:30" (1/2) ... [2024-01-31 16:46:30,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26a01c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:30, skipping insertion in model container [2024-01-31 16:46:30,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:30" (2/2) ... [2024-01-31 16:46:30,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a799913 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30, skipping insertion in model container [2024-01-31 16:46:30,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:30" (2/2) ... [2024-01-31 16:46:30,609 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:46:30,659 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:46:30,660 INFO L98 nessWitnessExtractor]: Location invariant after [L76-L76] (unsigned long )_argptr == 0UL [2024-01-31 16:46:30,660 INFO L98 nessWitnessExtractor]: Location invariant after [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:46:30,660 INFO L98 nessWitnessExtractor]: Location invariant after [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:46:30,686 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:46:30,848 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-01-31 16:46:30,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:30,865 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:46:30,877 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:46:30,879 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:46:30,881 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:46:30,887 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-01-31 16:46:30,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:30,906 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:46:30,906 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30 WrapperNode [2024-01-31 16:46:30,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:30,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:30,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:46:30,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:46:30,928 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 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,936 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 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,963 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 288 [2024-01-31 16:46:30,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:30,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:46:30,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:46:30,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:46:30,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,998 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2024-01-31 16:46:30,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:30,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:46:31,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:46:31,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:46:31,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:46:31,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (1/1) ... [2024-01-31 16:46:31,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:31,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:31,055 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) [2024-01-31 16:46:31,061 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 [2024-01-31 16:46:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:46:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:46:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:46:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:46:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:46:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:46:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:46:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:46:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:46:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:46:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:46:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:46:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:46:31,092 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:46:31,209 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:46:31,211 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:46:31,571 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:46:31,571 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:46:31,918 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:46:31,918 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:46:31,919 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:31 BoogieIcfgContainer [2024-01-31 16:46:31,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:46:31,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:46:31,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:46:31,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:46:31,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:46:30" (1/4) ... [2024-01-31 16:46:31,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c110a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:31, skipping insertion in model container [2024-01-31 16:46:31,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:30" (2/4) ... [2024-01-31 16:46:31,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c110a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:31, skipping insertion in model container [2024-01-31 16:46:31,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:30" (3/4) ... [2024-01-31 16:46:31,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c110a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:31, skipping insertion in model container [2024-01-31 16:46:31,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:31" (4/4) ... [2024-01-31 16:46:31,929 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-01-31 16:46:31,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:46:31,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:46:31,947 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:46:32,013 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:46:32,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 105 flow [2024-01-31 16:46:32,102 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-01-31 16:46:32,102 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:46:32,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 9/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-31 16:46:32,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 105 flow [2024-01-31 16:46:32,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 94 flow [2024-01-31 16:46:32,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:46:32,133 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;@56b7272e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:46:32,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:46:32,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:46:32,151 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-01-31 16:46:32,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:46:32,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:32,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:32,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:32,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1836545607, now seen corresponding path program 1 times [2024-01-31 16:46:32,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:32,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550512070] [2024-01-31 16:46:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:32,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550512070] [2024-01-31 16:46:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550512070] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:32,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:46:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056680758] [2024-01-31 16:46:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:32,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:46:32,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:46:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:46:32,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:32,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:32,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:32,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:32,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:33,592 INFO L124 PetriNetUnfolderBase]: 3107/4257 cut-off events. [2024-01-31 16:46:33,592 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-01-31 16:46:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 4257 events. 3107/4257 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18192 event pairs, 284 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 5627. Up to 1391 conditions per place. [2024-01-31 16:46:33,624 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 129 selfloop transitions, 13 changer transitions 3/146 dead transitions. [2024-01-31 16:46:33,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 146 transitions, 654 flow [2024-01-31 16:46:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:46:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:46:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-01-31 16:46:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-01-31 16:46:33,641 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 94 flow. Second operand 9 states and 182 transitions. [2024-01-31 16:46:33,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 146 transitions, 654 flow [2024-01-31 16:46:33,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 146 transitions, 606 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:46:33,659 INFO L231 Difference]: Finished difference. Result has 44 places, 51 transitions, 160 flow [2024-01-31 16:46:33,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=51} [2024-01-31 16:46:33,666 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-01-31 16:46:33,666 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 51 transitions, 160 flow [2024-01-31 16:46:33,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:33,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:33,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:46:33,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:33,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash 575197119, now seen corresponding path program 2 times [2024-01-31 16:46:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487265572] [2024-01-31 16:46:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487265572] [2024-01-31 16:46:33,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487265572] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:33,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:46:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840239684] [2024-01-31 16:46:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:46:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:46:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:46:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 51 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:34,578 INFO L124 PetriNetUnfolderBase]: 3637/5053 cut-off events. [2024-01-31 16:46:34,579 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-01-31 16:46:34,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11082 conditions, 5053 events. 3637/5053 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23209 event pairs, 394 based on Foata normal form. 1/4147 useless extension candidates. Maximal degree in co-relation 7929. Up to 1577 conditions per place. [2024-01-31 16:46:34,607 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 131 selfloop transitions, 15 changer transitions 3/150 dead transitions. [2024-01-31 16:46:34,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 150 transitions, 687 flow [2024-01-31 16:46:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:46:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:46:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-01-31 16:46:34,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-01-31 16:46:34,617 INFO L175 Difference]: Start difference. First operand has 44 places, 51 transitions, 160 flow. Second operand 9 states and 184 transitions. [2024-01-31 16:46:34,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 150 transitions, 687 flow [2024-01-31 16:46:34,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 150 transitions, 685 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:34,623 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 222 flow [2024-01-31 16:46:34,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-01-31 16:46:34,624 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-01-31 16:46:34,624 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 222 flow [2024-01-31 16:46:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:34,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:34,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:34,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:46:34,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:34,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1036057779, now seen corresponding path program 1 times [2024-01-31 16:46:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223713071] [2024-01-31 16:46:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223713071] [2024-01-31 16:46:34,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223713071] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:34,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:46:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556038926] [2024-01-31 16:46:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:34,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:34,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:34,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:34,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:34,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:34,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:35,170 INFO L124 PetriNetUnfolderBase]: 2484/3498 cut-off events. [2024-01-31 16:46:35,170 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-01-31 16:46:35,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 3498 events. 2484/3498 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14848 event pairs, 902 based on Foata normal form. 0/2919 useless extension candidates. Maximal degree in co-relation 6143. Up to 1851 conditions per place. [2024-01-31 16:46:35,184 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 84 selfloop transitions, 6 changer transitions 2/93 dead transitions. [2024-01-31 16:46:35,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 474 flow [2024-01-31 16:46:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-01-31 16:46:35,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-01-31 16:46:35,186 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 222 flow. Second operand 5 states and 108 transitions. [2024-01-31 16:46:35,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 474 flow [2024-01-31 16:46:35,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 451 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:46:35,190 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 188 flow [2024-01-31 16:46:35,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-01-31 16:46:35,192 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-01-31 16:46:35,192 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 188 flow [2024-01-31 16:46:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:35,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:35,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:35,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:35,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -441669003, now seen corresponding path program 1 times [2024-01-31 16:46:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400323904] [2024-01-31 16:46:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:35,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400323904] [2024-01-31 16:46:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400323904] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:46:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500623304] [2024-01-31 16:46:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:35,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:35,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:35,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:35,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:35,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:35,841 INFO L124 PetriNetUnfolderBase]: 3967/5688 cut-off events. [2024-01-31 16:46:35,841 INFO L125 PetriNetUnfolderBase]: For 2750/2750 co-relation queries the response was YES. [2024-01-31 16:46:35,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12860 conditions, 5688 events. 3967/5688 cut-off events. For 2750/2750 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27072 event pairs, 1888 based on Foata normal form. 0/4821 useless extension candidates. Maximal degree in co-relation 10125. Up to 3497 conditions per place. [2024-01-31 16:46:35,864 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 91 selfloop transitions, 6 changer transitions 4/102 dead transitions. [2024-01-31 16:46:35,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 102 transitions, 538 flow [2024-01-31 16:46:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-01-31 16:46:35,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-01-31 16:46:35,866 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 188 flow. Second operand 5 states and 104 transitions. [2024-01-31 16:46:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 102 transitions, 538 flow [2024-01-31 16:46:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 527 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:35,872 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 226 flow [2024-01-31 16:46:35,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-01-31 16:46:35,873 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-01-31 16:46:35,874 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 226 flow [2024-01-31 16:46:35,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:35,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:35,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:35,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:46:35,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:35,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1630654532, now seen corresponding path program 1 times [2024-01-31 16:46:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:35,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549191942] [2024-01-31 16:46:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:36,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549191942] [2024-01-31 16:46:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549191942] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745403988] [2024-01-31 16:46:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:36,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:36,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:36,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:36,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:46:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:36,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:46:36,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:36,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745403988] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 16:46:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-01-31 16:46:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584029707] [2024-01-31 16:46:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:36,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:46:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:46:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:46:36,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:36,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:36,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:36,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:36,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:37,065 INFO L124 PetriNetUnfolderBase]: 3456/4944 cut-off events. [2024-01-31 16:46:37,065 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-01-31 16:46:37,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 4944 events. 3456/4944 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22297 event pairs, 2007 based on Foata normal form. 1/4354 useless extension candidates. Maximal degree in co-relation 9940. Up to 2228 conditions per place. [2024-01-31 16:46:37,085 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 115 selfloop transitions, 8 changer transitions 5/129 dead transitions. [2024-01-31 16:46:37,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 129 transitions, 690 flow [2024-01-31 16:46:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:46:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:46:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-01-31 16:46:37,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-01-31 16:46:37,086 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 226 flow. Second operand 7 states and 144 transitions. [2024-01-31 16:46:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 129 transitions, 690 flow [2024-01-31 16:46:37,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 129 transitions, 682 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:37,092 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 259 flow [2024-01-31 16:46:37,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-01-31 16:46:37,093 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-01-31 16:46:37,093 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 259 flow [2024-01-31 16:46:37,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:37,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:37,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:37,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:37,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:37,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash 686455504, now seen corresponding path program 1 times [2024-01-31 16:46:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:37,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336442324] [2024-01-31 16:46:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336442324] [2024-01-31 16:46:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336442324] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:37,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:37,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:46:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954002052] [2024-01-31 16:46:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:37,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:37,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:37,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:37,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:37,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:37,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:37,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:38,236 INFO L124 PetriNetUnfolderBase]: 4187/6009 cut-off events. [2024-01-31 16:46:38,237 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2024-01-31 16:46:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14663 conditions, 6009 events. 4187/6009 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29062 event pairs, 1425 based on Foata normal form. 2/5590 useless extension candidates. Maximal degree in co-relation 12250. Up to 2714 conditions per place. [2024-01-31 16:46:38,259 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 87 selfloop transitions, 5 changer transitions 65/158 dead transitions. [2024-01-31 16:46:38,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 836 flow [2024-01-31 16:46:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-01-31 16:46:38,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-01-31 16:46:38,261 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 259 flow. Second operand 8 states and 180 transitions. [2024-01-31 16:46:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 836 flow [2024-01-31 16:46:38,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 158 transitions, 823 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:38,275 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 243 flow [2024-01-31 16:46:38,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-01-31 16:46:38,276 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-01-31 16:46:38,276 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 243 flow [2024-01-31 16:46:38,277 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) [2024-01-31 16:46:38,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:38,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:38,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:46:38,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:38,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1887253524, now seen corresponding path program 2 times [2024-01-31 16:46:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616476298] [2024-01-31 16:46:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616476298] [2024-01-31 16:46:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616476298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:38,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:46:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287716210] [2024-01-31 16:46:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:38,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:38,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:38,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 243 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) [2024-01-31 16:46:38,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:38,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:38,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:39,328 INFO L124 PetriNetUnfolderBase]: 4573/6566 cut-off events. [2024-01-31 16:46:39,328 INFO L125 PetriNetUnfolderBase]: For 4331/4331 co-relation queries the response was YES. [2024-01-31 16:46:39,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16571 conditions, 6566 events. 4573/6566 cut-off events. For 4331/4331 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31824 event pairs, 1783 based on Foata normal form. 2/6117 useless extension candidates. Maximal degree in co-relation 16522. Up to 2714 conditions per place. [2024-01-31 16:46:39,354 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 109 selfloop transitions, 6 changer transitions 49/165 dead transitions. [2024-01-31 16:46:39,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 165 transitions, 916 flow [2024-01-31 16:46:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-01-31 16:46:39,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-01-31 16:46:39,356 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 243 flow. Second operand 8 states and 185 transitions. [2024-01-31 16:46:39,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 165 transitions, 916 flow [2024-01-31 16:46:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 165 transitions, 865 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-01-31 16:46:39,373 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 259 flow [2024-01-31 16:46:39,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-01-31 16:46:39,375 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-01-31 16:46:39,375 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 259 flow [2024-01-31 16:46:39,375 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) [2024-01-31 16:46:39,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:39,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:46:39,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:39,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -134150480, now seen corresponding path program 1 times [2024-01-31 16:46:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711069901] [2024-01-31 16:46:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:39,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711069901] [2024-01-31 16:46:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711069901] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:39,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:46:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407540879] [2024-01-31 16:46:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:39,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:39,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:39,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:39,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:39,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:41,191 INFO L124 PetriNetUnfolderBase]: 11955/17009 cut-off events. [2024-01-31 16:46:41,192 INFO L125 PetriNetUnfolderBase]: For 13194/13194 co-relation queries the response was YES. [2024-01-31 16:46:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43551 conditions, 17009 events. 11955/17009 cut-off events. For 13194/13194 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 95449 event pairs, 3687 based on Foata normal form. 4/15722 useless extension candidates. Maximal degree in co-relation 43464. Up to 5117 conditions per place. [2024-01-31 16:46:41,273 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 170 selfloop transitions, 28 changer transitions 13/212 dead transitions. [2024-01-31 16:46:41,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 212 transitions, 1289 flow [2024-01-31 16:46:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:46:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:46:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-01-31 16:46:41,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-01-31 16:46:41,275 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 259 flow. Second operand 9 states and 196 transitions. [2024-01-31 16:46:41,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 212 transitions, 1289 flow [2024-01-31 16:46:41,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 212 transitions, 1240 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-01-31 16:46:41,335 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 521 flow [2024-01-31 16:46:41,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=521, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-01-31 16:46:41,336 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2024-01-31 16:46:41,336 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 521 flow [2024-01-31 16:46:41,336 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) [2024-01-31 16:46:41,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:41,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:46:41,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:41,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash 481232024, now seen corresponding path program 2 times [2024-01-31 16:46:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425724726] [2024-01-31 16:46:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425724726] [2024-01-31 16:46:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425724726] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:41,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:46:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138743192] [2024-01-31 16:46:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:41,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:41,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 521 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) [2024-01-31 16:46:41,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:41,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:41,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:43,780 INFO L124 PetriNetUnfolderBase]: 17778/25301 cut-off events. [2024-01-31 16:46:43,780 INFO L125 PetriNetUnfolderBase]: For 27076/27076 co-relation queries the response was YES. [2024-01-31 16:46:43,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69779 conditions, 25301 events. 17778/25301 cut-off events. For 27076/27076 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 150320 event pairs, 4024 based on Foata normal form. 4/24699 useless extension candidates. Maximal degree in co-relation 63476. Up to 6466 conditions per place. [2024-01-31 16:46:43,911 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 222 selfloop transitions, 28 changer transitions 18/269 dead transitions. [2024-01-31 16:46:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 269 transitions, 1955 flow [2024-01-31 16:46:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:46:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:46:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-01-31 16:46:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-01-31 16:46:43,913 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 521 flow. Second operand 10 states and 218 transitions. [2024-01-31 16:46:43,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 269 transitions, 1955 flow [2024-01-31 16:46:44,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 269 transitions, 1953 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:44,053 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 802 flow [2024-01-31 16:46:44,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=802, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2024-01-31 16:46:44,054 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2024-01-31 16:46:44,054 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 802 flow [2024-01-31 16:46:44,054 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) [2024-01-31 16:46:44,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:44,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:46:44,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:44,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -557933711, now seen corresponding path program 1 times [2024-01-31 16:46:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:44,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354077498] [2024-01-31 16:46:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:44,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354077498] [2024-01-31 16:46:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354077498] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986526032] [2024-01-31 16:46:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:44,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:44,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:44,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:46:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:44,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:46:44,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:44,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986526032] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:44,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 16:46:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-01-31 16:46:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648063103] [2024-01-31 16:46:44,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:44,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-01-31 16:46:44,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:44,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 802 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) [2024-01-31 16:46:44,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:44,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:44,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:46,854 INFO L124 PetriNetUnfolderBase]: 16923/24093 cut-off events. [2024-01-31 16:46:46,854 INFO L125 PetriNetUnfolderBase]: For 43636/43636 co-relation queries the response was YES. [2024-01-31 16:46:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73045 conditions, 24093 events. 16923/24093 cut-off events. For 43636/43636 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 144212 event pairs, 8264 based on Foata normal form. 4/23545 useless extension candidates. Maximal degree in co-relation 66063. Up to 13602 conditions per place. [2024-01-31 16:46:46,968 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 170 selfloop transitions, 34 changer transitions 15/220 dead transitions. [2024-01-31 16:46:46,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 220 transitions, 1705 flow [2024-01-31 16:46:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-01-31 16:46:46,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-01-31 16:46:46,971 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 802 flow. Second operand 8 states and 187 transitions. [2024-01-31 16:46:46,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 220 transitions, 1705 flow [2024-01-31 16:46:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 220 transitions, 1678 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:47,127 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 875 flow [2024-01-31 16:46:47,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=875, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-01-31 16:46:47,129 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2024-01-31 16:46:47,130 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 875 flow [2024-01-31 16:46:47,130 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) [2024-01-31 16:46:47,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:47,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:47,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:47,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-31 16:46:47,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:47,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash 217185800, now seen corresponding path program 3 times [2024-01-31 16:46:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:47,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427347401] [2024-01-31 16:46:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:47,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:47,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427347401] [2024-01-31 16:46:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427347401] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:47,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:47,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:46:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362989773] [2024-01-31 16:46:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:47,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:47,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:47,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 875 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) [2024-01-31 16:46:47,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:47,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:47,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:50,161 INFO L124 PetriNetUnfolderBase]: 20237/28894 cut-off events. [2024-01-31 16:46:50,162 INFO L125 PetriNetUnfolderBase]: For 55078/55078 co-relation queries the response was YES. [2024-01-31 16:46:50,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88521 conditions, 28894 events. 20237/28894 cut-off events. For 55078/55078 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 177752 event pairs, 8854 based on Foata normal form. 8/28350 useless extension candidates. Maximal degree in co-relation 79813. Up to 11897 conditions per place. [2024-01-31 16:46:50,275 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 140 selfloop transitions, 8 changer transitions 103/252 dead transitions. [2024-01-31 16:46:50,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 252 transitions, 2297 flow [2024-01-31 16:46:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-01-31 16:46:50,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-01-31 16:46:50,277 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 875 flow. Second operand 8 states and 178 transitions. [2024-01-31 16:46:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 252 transitions, 2297 flow [2024-01-31 16:46:50,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 252 transitions, 2206 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-01-31 16:46:50,622 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 843 flow [2024-01-31 16:46:50,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=843, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-01-31 16:46:50,623 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-01-31 16:46:50,623 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 843 flow [2024-01-31 16:46:50,623 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) [2024-01-31 16:46:50,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:50,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:46:50,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:50,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1995530954, now seen corresponding path program 3 times [2024-01-31 16:46:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552823024] [2024-01-31 16:46:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:50,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552823024] [2024-01-31 16:46:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552823024] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:46:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505742116] [2024-01-31 16:46:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:50,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:50,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:50,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 843 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) [2024-01-31 16:46:50,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:50,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:50,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:52,455 INFO L124 PetriNetUnfolderBase]: 13399/19062 cut-off events. [2024-01-31 16:46:52,455 INFO L125 PetriNetUnfolderBase]: For 33498/33498 co-relation queries the response was YES. [2024-01-31 16:46:52,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58228 conditions, 19062 events. 13399/19062 cut-off events. For 33498/33498 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 108443 event pairs, 4442 based on Foata normal form. 2/18512 useless extension candidates. Maximal degree in co-relation 58106. Up to 5468 conditions per place. [2024-01-31 16:46:52,554 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 186 selfloop transitions, 32 changer transitions 27/246 dead transitions. [2024-01-31 16:46:52,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 246 transitions, 2094 flow [2024-01-31 16:46:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:46:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:46:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-01-31 16:46:52,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264550264550265 [2024-01-31 16:46:52,556 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 843 flow. Second operand 9 states and 199 transitions. [2024-01-31 16:46:52,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 246 transitions, 2094 flow [2024-01-31 16:46:52,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 246 transitions, 2042 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-01-31 16:46:52,838 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 1069 flow [2024-01-31 16:46:52,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2024-01-31 16:46:52,839 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2024-01-31 16:46:52,839 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 1069 flow [2024-01-31 16:46:52,839 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) [2024-01-31 16:46:52,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:52,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:52,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:46:52,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:52,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1651858310, now seen corresponding path program 1 times [2024-01-31 16:46:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:52,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936656106] [2024-01-31 16:46:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:52,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936656106] [2024-01-31 16:46:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936656106] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335950660] [2024-01-31 16:46:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:52,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:52,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:53,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:46:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:53,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-31 16:46:53,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:53,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335950660] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:53,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-01-31 16:46:53,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47882684] [2024-01-31 16:46:53,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:53,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 16:46:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 16:46:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-01-31 16:46:53,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:53,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 1069 flow. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:53,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:53,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:53,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:56,612 INFO L124 PetriNetUnfolderBase]: 23718/33546 cut-off events. [2024-01-31 16:46:56,612 INFO L125 PetriNetUnfolderBase]: For 79993/79993 co-relation queries the response was YES. [2024-01-31 16:46:56,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107457 conditions, 33546 events. 23718/33546 cut-off events. For 79993/79993 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 204210 event pairs, 12584 based on Foata normal form. 9/32680 useless extension candidates. Maximal degree in co-relation 95988. Up to 8616 conditions per place. [2024-01-31 16:46:56,744 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 248 selfloop transitions, 17 changer transitions 141/407 dead transitions. [2024-01-31 16:46:56,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 407 transitions, 4087 flow [2024-01-31 16:46:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:46:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:46:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 303 transitions. [2024-01-31 16:46:56,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-01-31 16:46:56,746 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 1069 flow. Second operand 18 states and 303 transitions. [2024-01-31 16:46:56,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 407 transitions, 4087 flow [2024-01-31 16:46:57,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 407 transitions, 3764 flow, removed 92 selfloop flow, removed 7 redundant places. [2024-01-31 16:46:57,254 INFO L231 Difference]: Finished difference. Result has 128 places, 91 transitions, 728 flow [2024-01-31 16:46:57,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=728, PETRI_PLACES=128, PETRI_TRANSITIONS=91} [2024-01-31 16:46:57,255 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2024-01-31 16:46:57,255 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 91 transitions, 728 flow [2024-01-31 16:46:57,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:57,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:57,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:57,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-31 16:46:57,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:57,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 865802933, now seen corresponding path program 1 times [2024-01-31 16:46:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369284078] [2024-01-31 16:46:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:57,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369284078] [2024-01-31 16:46:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369284078] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:46:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039221591] [2024-01-31 16:46:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:57,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:57,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:57,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 91 transitions, 728 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:57,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:57,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:57,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:58,893 INFO L124 PetriNetUnfolderBase]: 10368/14841 cut-off events. [2024-01-31 16:46:58,893 INFO L125 PetriNetUnfolderBase]: For 21628/21628 co-relation queries the response was YES. [2024-01-31 16:46:58,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42375 conditions, 14841 events. 10368/14841 cut-off events. For 21628/21628 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 82570 event pairs, 4474 based on Foata normal form. 692/15530 useless extension candidates. Maximal degree in co-relation 42334. Up to 7476 conditions per place. [2024-01-31 16:46:58,944 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 52 selfloop transitions, 4 changer transitions 67/124 dead transitions. [2024-01-31 16:46:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 124 transitions, 1003 flow [2024-01-31 16:46:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:46:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:46:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-01-31 16:46:58,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-01-31 16:46:58,945 INFO L175 Difference]: Start difference. First operand has 128 places, 91 transitions, 728 flow. Second operand 6 states and 110 transitions. [2024-01-31 16:46:58,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 124 transitions, 1003 flow [2024-01-31 16:46:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 124 transitions, 909 flow, removed 23 selfloop flow, removed 16 redundant places. [2024-01-31 16:46:59,021 INFO L231 Difference]: Finished difference. Result has 101 places, 57 transitions, 287 flow [2024-01-31 16:46:59,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=101, PETRI_TRANSITIONS=57} [2024-01-31 16:46:59,021 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2024-01-31 16:46:59,022 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 57 transitions, 287 flow [2024-01-31 16:46:59,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:59,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:59,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:46:59,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:59,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1830469221, now seen corresponding path program 2 times [2024-01-31 16:46:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024300379] [2024-01-31 16:46:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:46:59,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:59,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024300379] [2024-01-31 16:46:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024300379] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:59,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:46:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794182352] [2024-01-31 16:46:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:59,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:59,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:46:59,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 57 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:59,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:59,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:46:59,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:59,703 INFO L124 PetriNetUnfolderBase]: 3660/5234 cut-off events. [2024-01-31 16:46:59,703 INFO L125 PetriNetUnfolderBase]: For 5940/5940 co-relation queries the response was YES. [2024-01-31 16:46:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14123 conditions, 5234 events. 3660/5234 cut-off events. For 5940/5940 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23909 event pairs, 1818 based on Foata normal form. 126/5150 useless extension candidates. Maximal degree in co-relation 14092. Up to 3435 conditions per place. [2024-01-31 16:46:59,718 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 47 selfloop transitions, 4 changer transitions 48/100 dead transitions. [2024-01-31 16:46:59,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 627 flow [2024-01-31 16:46:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-01-31 16:46:59,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-01-31 16:46:59,719 INFO L175 Difference]: Start difference. First operand has 101 places, 57 transitions, 287 flow. Second operand 5 states and 97 transitions. [2024-01-31 16:46:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 627 flow [2024-01-31 16:46:59,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 578 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-01-31 16:46:59,746 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 214 flow [2024-01-31 16:46:59,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2024-01-31 16:46:59,746 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2024-01-31 16:46:59,746 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 214 flow [2024-01-31 16:46:59,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:59,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:59,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:46:59,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:59,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1879671983, now seen corresponding path program 1 times [2024-01-31 16:46:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394343152] [2024-01-31 16:46:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394343152] [2024-01-31 16:46:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394343152] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:59,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569674100] [2024-01-31 16:46:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:59,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:59,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:59,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:59,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:47:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:00,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-31 16:47:00,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:47:00,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:47:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:47:00,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569674100] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:47:00,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:47:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-01-31 16:47:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539426698] [2024-01-31 16:47:00,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:47:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:47:00,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:47:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:47:00,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:47:00,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 214 flow. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 18 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:00,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:00,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:47:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:01,522 INFO L124 PetriNetUnfolderBase]: 7199/9970 cut-off events. [2024-01-31 16:47:01,522 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2024-01-31 16:47:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23782 conditions, 9970 events. 7199/9970 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48896 event pairs, 628 based on Foata normal form. 4/9106 useless extension candidates. Maximal degree in co-relation 23760. Up to 2916 conditions per place. [2024-01-31 16:47:01,547 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 162 selfloop transitions, 26 changer transitions 10/199 dead transitions. [2024-01-31 16:47:01,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 199 transitions, 1072 flow [2024-01-31 16:47:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 16:47:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 16:47:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 233 transitions. [2024-01-31 16:47:01,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36984126984126986 [2024-01-31 16:47:01,549 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 214 flow. Second operand 15 states and 233 transitions. [2024-01-31 16:47:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 199 transitions, 1072 flow [2024-01-31 16:47:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 199 transitions, 1012 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-01-31 16:47:01,604 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 349 flow [2024-01-31 16:47:01,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=349, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-01-31 16:47:01,605 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-01-31 16:47:01,605 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 349 flow [2024-01-31 16:47:01,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 18 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:01,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:01,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:01,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:01,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-31 16:47:01,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:01,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash -25008207, now seen corresponding path program 2 times [2024-01-31 16:47:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107880825] [2024-01-31 16:47:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:47:01,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:01,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107880825] [2024-01-31 16:47:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107880825] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664628497] [2024-01-31 16:47:01,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:47:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:01,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:01,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:01,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:47:02,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 16:47:02,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:02,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:47:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:02,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:47:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664628497] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:02,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:47:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-01-31 16:47:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712825504] [2024-01-31 16:47:02,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:02,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:47:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:47:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:47:02,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:47:02,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:47:02,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:03,509 INFO L124 PetriNetUnfolderBase]: 15743/21758 cut-off events. [2024-01-31 16:47:03,510 INFO L125 PetriNetUnfolderBase]: For 9393/9393 co-relation queries the response was YES. [2024-01-31 16:47:03,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51831 conditions, 21758 events. 15743/21758 cut-off events. For 9393/9393 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 121815 event pairs, 1826 based on Foata normal form. 4/18542 useless extension candidates. Maximal degree in co-relation 51809. Up to 9516 conditions per place. [2024-01-31 16:47:03,628 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 138 selfloop transitions, 13 changer transitions 23/175 dead transitions. [2024-01-31 16:47:03,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 175 transitions, 1071 flow [2024-01-31 16:47:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-01-31 16:47:03,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-01-31 16:47:03,629 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 349 flow. Second operand 6 states and 143 transitions. [2024-01-31 16:47:03,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 175 transitions, 1071 flow [2024-01-31 16:47:03,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 175 transitions, 1057 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:47:03,646 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 441 flow [2024-01-31 16:47:03,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-01-31 16:47:03,646 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-01-31 16:47:03,646 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 441 flow [2024-01-31 16:47:03,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:03,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:03,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:03,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:03,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-31 16:47:03,853 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:03,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash 793171553, now seen corresponding path program 3 times [2024-01-31 16:47:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098093021] [2024-01-31 16:47:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:03,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:47:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098093021] [2024-01-31 16:47:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098093021] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664353409] [2024-01-31 16:47:04,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:47:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:04,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:04,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:47:04,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 16:47:04,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:04,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:47:04,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:04,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:47:04,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664353409] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:04,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:47:04,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-01-31 16:47:04,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466322569] [2024-01-31 16:47:04,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:04,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:47:04,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:47:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:47:04,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:47:04,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:04,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:04,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:47:04,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:06,423 INFO L124 PetriNetUnfolderBase]: 23039/31934 cut-off events. [2024-01-31 16:47:06,423 INFO L125 PetriNetUnfolderBase]: For 27759/27759 co-relation queries the response was YES. [2024-01-31 16:47:06,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85094 conditions, 31934 events. 23039/31934 cut-off events. For 27759/27759 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 188609 event pairs, 3354 based on Foata normal form. 4/30406 useless extension candidates. Maximal degree in co-relation 85067. Up to 15910 conditions per place. [2024-01-31 16:47:06,628 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 127 selfloop transitions, 21 changer transitions 24/173 dead transitions. [2024-01-31 16:47:06,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 173 transitions, 1155 flow [2024-01-31 16:47:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-01-31 16:47:06,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-31 16:47:06,630 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 441 flow. Second operand 6 states and 136 transitions. [2024-01-31 16:47:06,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 173 transitions, 1155 flow [2024-01-31 16:47:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 173 transitions, 1147 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:47:06,695 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 593 flow [2024-01-31 16:47:06,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-01-31 16:47:06,696 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2024-01-31 16:47:06,696 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 593 flow [2024-01-31 16:47:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:06,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:06,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:06,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:06,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-31 16:47:06,898 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:06,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1987649637, now seen corresponding path program 4 times [2024-01-31 16:47:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129064201] [2024-01-31 16:47:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:47:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129064201] [2024-01-31 16:47:07,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129064201] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891070121] [2024-01-31 16:47:07,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:47:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:07,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:07,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:07,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 16:47:07,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:47:07,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:07,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:47:07,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:07,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:47:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891070121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:47:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-01-31 16:47:07,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817717617] [2024-01-31 16:47:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:47:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:47:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:47:07,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-01-31 16:47:07,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:07,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:07,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-01-31 16:47:07,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:10,296 INFO L124 PetriNetUnfolderBase]: 32295/44882 cut-off events. [2024-01-31 16:47:10,296 INFO L125 PetriNetUnfolderBase]: For 75666/75666 co-relation queries the response was YES. [2024-01-31 16:47:10,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132863 conditions, 44882 events. 32295/44882 cut-off events. For 75666/75666 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 278154 event pairs, 8000 based on Foata normal form. 4/42706 useless extension candidates. Maximal degree in co-relation 132833. Up to 18415 conditions per place. [2024-01-31 16:47:10,655 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 137 selfloop transitions, 28 changer transitions 25/191 dead transitions. [2024-01-31 16:47:10,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 191 transitions, 1453 flow [2024-01-31 16:47:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-01-31 16:47:10,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-31 16:47:10,656 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 593 flow. Second operand 6 states and 138 transitions. [2024-01-31 16:47:10,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 191 transitions, 1453 flow [2024-01-31 16:47:10,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 191 transitions, 1419 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-01-31 16:47:10,923 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 727 flow [2024-01-31 16:47:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=727, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-01-31 16:47:10,924 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2024-01-31 16:47:10,924 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 727 flow [2024-01-31 16:47:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:10,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:10,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:10,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:11,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:11,125 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:11,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1538349069, now seen corresponding path program 5 times [2024-01-31 16:47:11,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:11,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628495067] [2024-01-31 16:47:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:47:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628495067] [2024-01-31 16:47:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628495067] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006064757] [2024-01-31 16:47:11,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:47:11,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:11,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)