./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:55,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:55,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:53:55,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:55,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:55,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:55,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:55,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:55,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:55,692 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:55,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:55,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:55,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:55,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:55,694 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:55,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:55,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:55,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:55,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:55,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:55,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:55,696 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:55,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:55,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:55,699 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:55,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:55,699 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:55,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:55,700 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:55,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:55,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:55,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:55,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:55,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:55,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:55,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:55,702 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2024-10-11 19:53:55,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:55,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:55,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:55,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:55,945 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:55,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-10-11 19:53:57,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:57,420 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:57,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-10-11 19:53:57,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce6c1aef0/6947de31c9fd40ebb2c5a5ac011966aa/FLAG9fa0c6c4f [2024-10-11 19:53:57,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce6c1aef0/6947de31c9fd40ebb2c5a5ac011966aa [2024-10-11 19:53:57,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:57,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:57,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:57,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:57,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:57,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:57" (1/1) ... [2024-10-11 19:53:57,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fecb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:57, skipping insertion in model container [2024-10-11 19:53:57,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:57" (1/1) ... [2024-10-11 19:53:57,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:58,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:58,019 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:53:58,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:58,057 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:53:58,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58 WrapperNode [2024-10-11 19:53:58,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:58,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:58,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:53:58,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:53:58,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,114 INFO L138 Inliner]: procedures = 24, calls = 69, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 240 [2024-10-11 19:53:58,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:58,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:53:58,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:53:58,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:53:58,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,153 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:53:58,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:53:58,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:53:58,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:53:58,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:53:58,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (1/1) ... [2024-10-11 19:53:58,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:58,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:53:58,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:53:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:53:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:53:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:53:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:53:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:53:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:53:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:53:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 19:53:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-11 19:53:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-11 19:53:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:53:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:53:58,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:53:58,259 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:53:58,364 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:53:58,393 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:53:58,702 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:53:58,703 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:53:58,915 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:53:58,916 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 19:53:58,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:58 BoogieIcfgContainer [2024-10-11 19:53:58,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:53:58,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:53:58,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:53:58,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:53:58,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:53:57" (1/3) ... [2024-10-11 19:53:58,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64625138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:58, skipping insertion in model container [2024-10-11 19:53:58,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:58" (2/3) ... [2024-10-11 19:53:58,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64625138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:58, skipping insertion in model container [2024-10-11 19:53:58,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:58" (3/3) ... [2024-10-11 19:53:58,925 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-10-11 19:53:58,940 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:53:58,940 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:53:58,940 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:53:59,010 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-10-11 19:53:59,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 76 transitions, 218 flow [2024-10-11 19:53:59,067 INFO L124 PetriNetUnfolderBase]: 4/64 cut-off events. [2024-10-11 19:53:59,067 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:53:59,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 64 events. 4/64 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2024-10-11 19:53:59,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 76 transitions, 218 flow [2024-10-11 19:53:59,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 63 transitions, 174 flow [2024-10-11 19:53:59,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:53:59,091 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@132acfe5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:53:59,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-11 19:53:59,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:53:59,109 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-11 19:53:59,109 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:53:59,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:59,110 INFO L204 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, 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] [2024-10-11 19:53:59,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:53:59,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash -894563170, now seen corresponding path program 1 times [2024-10-11 19:53:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:59,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267676129] [2024-10-11 19:53:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:59,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267676129] [2024-10-11 19:53:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267676129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:59,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516653480] [2024-10-11 19:53:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:59,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:53:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:59,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:53:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:53:59,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 80 [2024-10-11 19:53:59,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:59,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 80 [2024-10-11 19:53:59,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:00,592 INFO L124 PetriNetUnfolderBase]: 6924/10185 cut-off events. [2024-10-11 19:54:00,592 INFO L125 PetriNetUnfolderBase]: For 1575/1575 co-relation queries the response was YES. [2024-10-11 19:54:00,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21783 conditions, 10185 events. 6924/10185 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 62932 event pairs, 4018 based on Foata normal form. 95/9204 useless extension candidates. Maximal degree in co-relation 21542. Up to 8154 conditions per place. [2024-10-11 19:54:00,709 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 55 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-10-11 19:54:00,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 348 flow [2024-10-11 19:54:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-11 19:54:00,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-11 19:54:00,721 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 174 flow. Second operand 3 states and 152 transitions. [2024-10-11 19:54:00,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 348 flow [2024-10-11 19:54:00,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 300 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-10-11 19:54:00,756 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 146 flow [2024-10-11 19:54:00,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-10-11 19:54:00,763 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2024-10-11 19:54:00,763 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 146 flow [2024-10-11 19:54:00,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:00,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:00,763 INFO L204 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, 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] [2024-10-11 19:54:00,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:54:00,764 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:54:00,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -508508636, now seen corresponding path program 2 times [2024-10-11 19:54:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600617392] [2024-10-11 19:54:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:01,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:01,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600617392] [2024-10-11 19:54:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600617392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-11 19:54:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225984797] [2024-10-11 19:54:01,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:01,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:54:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:54:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-10-11 19:54:01,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 80 [2024-10-11 19:54:01,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 146 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:01,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:01,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 80 [2024-10-11 19:54:01,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:11,317 INFO L124 PetriNetUnfolderBase]: 123906/160008 cut-off events. [2024-10-11 19:54:11,318 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2024-10-11 19:54:11,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325069 conditions, 160008 events. 123906/160008 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 3329. Compared 929575 event pairs, 43837 based on Foata normal form. 1/155169 useless extension candidates. Maximal degree in co-relation 112344. Up to 129226 conditions per place. [2024-10-11 19:54:12,106 INFO L140 encePairwiseOnDemand]: 62/80 looper letters, 352 selfloop transitions, 113 changer transitions 36/510 dead transitions. [2024-10-11 19:54:12,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 510 transitions, 2187 flow [2024-10-11 19:54:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 19:54:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-11 19:54:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1030 transitions. [2024-10-11 19:54:12,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-10-11 19:54:12,116 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 146 flow. Second operand 33 states and 1030 transitions. [2024-10-11 19:54:12,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 510 transitions, 2187 flow [2024-10-11 19:54:12,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 510 transitions, 2157 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:12,141 INFO L231 Difference]: Finished difference. Result has 114 places, 175 transitions, 754 flow [2024-10-11 19:54:12,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=754, PETRI_PLACES=114, PETRI_TRANSITIONS=175} [2024-10-11 19:54:12,142 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2024-10-11 19:54:12,143 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 175 transitions, 754 flow [2024-10-11 19:54:12,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:12,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:12,143 INFO L204 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, 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] [2024-10-11 19:54:12,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:54:12,143 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:54:12,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 73452840, now seen corresponding path program 3 times [2024-10-11 19:54:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872363532] [2024-10-11 19:54:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:12,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:12,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872363532] [2024-10-11 19:54:12,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872363532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:12,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:12,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:12,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936475725] [2024-10-11 19:54:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:12,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:12,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:12,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 80 [2024-10-11 19:54:12,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 175 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:12,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:12,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 80 [2024-10-11 19:54:12,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:16,601 INFO L124 PetriNetUnfolderBase]: 36216/53772 cut-off events. [2024-10-11 19:54:16,602 INFO L125 PetriNetUnfolderBase]: For 14258/14860 co-relation queries the response was YES. [2024-10-11 19:54:16,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114693 conditions, 53772 events. 36216/53772 cut-off events. For 14258/14860 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 401021 event pairs, 20844 based on Foata normal form. 942/47837 useless extension candidates. Maximal degree in co-relation 114668. Up to 32656 conditions per place. [2024-10-11 19:54:17,136 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 53 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2024-10-11 19:54:17,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 190 transitions, 895 flow [2024-10-11 19:54:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-11 19:54:17,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6208333333333333 [2024-10-11 19:54:17,138 INFO L175 Difference]: Start difference. First operand has 114 places, 175 transitions, 754 flow. Second operand 3 states and 149 transitions. [2024-10-11 19:54:17,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 190 transitions, 895 flow [2024-10-11 19:54:17,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 190 transitions, 893 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:17,205 INFO L231 Difference]: Finished difference. Result has 114 places, 172 transitions, 748 flow [2024-10-11 19:54:17,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=114, PETRI_TRANSITIONS=172} [2024-10-11 19:54:17,205 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2024-10-11 19:54:17,206 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 172 transitions, 748 flow [2024-10-11 19:54:17,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:17,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:17,207 INFO L204 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, 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] [2024-10-11 19:54:17,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:54:17,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:54:17,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -648646216, now seen corresponding path program 4 times [2024-10-11 19:54:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562426575] [2024-10-11 19:54:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562426575] [2024-10-11 19:54:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562426575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641211638] [2024-10-11 19:54:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:17,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:17,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 80 [2024-10-11 19:54:17,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 172 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:17,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:17,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 80 [2024-10-11 19:54:17,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:20,187 INFO L124 PetriNetUnfolderBase]: 26476/40298 cut-off events. [2024-10-11 19:54:20,187 INFO L125 PetriNetUnfolderBase]: For 15678/15874 co-relation queries the response was YES. [2024-10-11 19:54:20,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88399 conditions, 40298 events. 26476/40298 cut-off events. For 15678/15874 co-relation queries the response was YES. Maximal size of possible extension queue 1383. Compared 293047 event pairs, 17092 based on Foata normal form. 575/35687 useless extension candidates. Maximal degree in co-relation 60307. Up to 24203 conditions per place. [2024-10-11 19:54:20,891 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 52 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2024-10-11 19:54:20,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 170 transitions, 810 flow [2024-10-11 19:54:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-10-11 19:54:20,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-11 19:54:20,892 INFO L175 Difference]: Start difference. First operand has 114 places, 172 transitions, 748 flow. Second operand 3 states and 148 transitions. [2024-10-11 19:54:20,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 170 transitions, 810 flow [2024-10-11 19:54:20,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 170 transitions, 800 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:20,938 INFO L231 Difference]: Finished difference. Result has 110 places, 153 transitions, 653 flow [2024-10-11 19:54:20,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=110, PETRI_TRANSITIONS=153} [2024-10-11 19:54:20,939 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-10-11 19:54:20,939 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 153 transitions, 653 flow [2024-10-11 19:54:20,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:20,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:20,940 INFO L204 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, 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] [2024-10-11 19:54:20,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:54:20,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:54:20,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash 190626892, now seen corresponding path program 5 times [2024-10-11 19:54:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098793968] [2024-10-11 19:54:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098793968] [2024-10-11 19:54:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098793968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-11 19:54:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674789676] [2024-10-11 19:54:21,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:21,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:54:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:21,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:54:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:54:21,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 80 [2024-10-11 19:54:21,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 153 transitions, 653 flow. Second operand has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:21,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:21,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 80 [2024-10-11 19:54:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:31,273 INFO L124 PetriNetUnfolderBase]: 98156/127253 cut-off events. [2024-10-11 19:54:31,273 INFO L125 PetriNetUnfolderBase]: For 177660/177708 co-relation queries the response was YES. [2024-10-11 19:54:31,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356286 conditions, 127253 events. 98156/127253 cut-off events. For 177660/177708 co-relation queries the response was YES. Maximal size of possible extension queue 2400. Compared 706219 event pairs, 21529 based on Foata normal form. 33/124145 useless extension candidates. Maximal degree in co-relation 180240. Up to 91686 conditions per place. [2024-10-11 19:54:32,490 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 465 selfloop transitions, 168 changer transitions 34/676 dead transitions. [2024-10-11 19:54:32,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 676 transitions, 3994 flow [2024-10-11 19:54:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-11 19:54:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-11 19:54:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1178 transitions. [2024-10-11 19:54:32,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-10-11 19:54:32,495 INFO L175 Difference]: Start difference. First operand has 110 places, 153 transitions, 653 flow. Second operand 38 states and 1178 transitions. [2024-10-11 19:54:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 676 transitions, 3994 flow [2024-10-11 19:54:33,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 676 transitions, 3984 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:33,016 INFO L231 Difference]: Finished difference. Result has 171 places, 313 transitions, 2069 flow [2024-10-11 19:54:33,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2069, PETRI_PLACES=171, PETRI_TRANSITIONS=313} [2024-10-11 19:54:33,018 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 93 predicate places. [2024-10-11 19:54:33,018 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 313 transitions, 2069 flow [2024-10-11 19:54:33,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:33,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:33,019 INFO L204 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, 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] [2024-10-11 19:54:33,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:54:33,019 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-10-11 19:54:33,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1066052390, now seen corresponding path program 6 times [2024-10-11 19:54:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293564421] [2024-10-11 19:54:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293564421] [2024-10-11 19:54:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293564421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-11 19:54:33,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666210656] [2024-10-11 19:54:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:33,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:54:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:54:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-10-11 19:54:33,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 80 [2024-10-11 19:54:33,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 313 transitions, 2069 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:33,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:33,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 80 [2024-10-11 19:54:33,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand