./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:36:34,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:36:34,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:36:34,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:36:34,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:36:34,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:36:34,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:36:34,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:36:34,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:36:34,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:36:34,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:36:34,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:36:34,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:36:34,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:36:34,415 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:36:34,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:36:34,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:36:34,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:36:34,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:36:34,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:36:34,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:36:34,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:36:34,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:36:34,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:36:34,419 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:36:34,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:36:34,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:36:34,420 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:36:34,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:36:34,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:36:34,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:36:34,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:36:34,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:34,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:36:34,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:36:34,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:36:34,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:36:34,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:36:34,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:36:34,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:36:34,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:36:34,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:36:34,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2024-10-11 14:36:34,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:36:34,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:36:34,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:36:34,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:36:34,699 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:36:34,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-11 14:36:36,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:36:36,264 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:36:36,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-11 14:36:36,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc305d372/80c3835d971b4a21b90d1eb454e59dca/FLAG677c0109d [2024-10-11 14:36:36,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc305d372/80c3835d971b4a21b90d1eb454e59dca [2024-10-11 14:36:36,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:36:36,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:36:36,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:36,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:36:36,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:36:36,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:36,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dbedb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36, skipping insertion in model container [2024-10-11 14:36:36,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:36,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:36:36,913 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-11 14:36:36,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:36,936 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:36:36,969 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-11 14:36:36,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:36,994 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:36:36,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36 WrapperNode [2024-10-11 14:36:36,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:36,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:36,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:36:36,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:36:37,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,056 INFO L138 Inliner]: procedures = 22, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2024-10-11 14:36:37,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:37,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:36:37,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:36:37,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:36:37,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,088 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 14:36:37,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:36:37,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:36:37,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:36:37,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:36:37,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (1/1) ... [2024-10-11 14:36:37,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:37,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:37,143 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 14:36:37,146 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 14:36:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:36:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:36:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:36:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:36:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:36:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:36:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:36:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:36:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:36:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:36:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:36:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:36:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:36:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:36:37,189 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 14:36:37,272 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:36:37,274 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:36:37,542 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:36:37,542 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:36:37,742 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:36:37,743 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:36:37,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:37 BoogieIcfgContainer [2024-10-11 14:36:37,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:36:37,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:36:37,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:36:37,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:36:37,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:36:36" (1/3) ... [2024-10-11 14:36:37,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd84d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:37, skipping insertion in model container [2024-10-11 14:36:37,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:36" (2/3) ... [2024-10-11 14:36:37,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd84d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:37, skipping insertion in model container [2024-10-11 14:36:37,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:37" (3/3) ... [2024-10-11 14:36:37,756 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-10-11 14:36:37,772 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:36:37,772 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:36:37,772 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:36:37,831 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 14:36:37,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 132 flow [2024-10-11 14:36:37,905 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-10-11 14:36:37,908 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:36:37,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 0/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-11 14:36:37,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 132 flow [2024-10-11 14:36:37,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 118 flow [2024-10-11 14:36:37,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:36:37,931 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=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;@28386ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:36:37,932 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:36:37,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:36:37,956 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-10-11 14:36:37,956 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:36:37,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:37,957 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] [2024-10-11 14:36:37,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:37,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash -571517718, now seen corresponding path program 1 times [2024-10-11 14:36:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:37,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356141401] [2024-10-11 14:36:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:38,615 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 14:36:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356141401] [2024-10-11 14:36:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356141401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:38,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744656851] [2024-10-11 14:36:38,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:38,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:38,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:38,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-11 14:36:38,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:38,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:38,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-11 14:36:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:38,935 INFO L124 PetriNetUnfolderBase]: 637/1259 cut-off events. [2024-10-11 14:36:38,936 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-10-11 14:36:38,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1259 events. 637/1259 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7937 event pairs, 160 based on Foata normal form. 9/1195 useless extension candidates. Maximal degree in co-relation 2039. Up to 825 conditions per place. [2024-10-11 14:36:38,956 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-11 14:36:38,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 209 flow [2024-10-11 14:36:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-11 14:36:38,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-11 14:36:38,969 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 118 flow. Second operand 3 states and 117 transitions. [2024-10-11 14:36:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 209 flow [2024-10-11 14:36:38,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 14:36:38,980 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 110 flow [2024-10-11 14:36:38,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-11 14:36:38,986 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-10-11 14:36:38,987 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 110 flow [2024-10-11 14:36:38,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:38,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:38,987 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] [2024-10-11 14:36:38,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:36:38,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:38,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash 683831154, now seen corresponding path program 2 times [2024-10-11 14:36:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:38,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647549723] [2024-10-11 14:36:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:39,198 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 14:36:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:39,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647549723] [2024-10-11 14:36:39,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647549723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:39,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:39,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203644453] [2024-10-11 14:36:39,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:39,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:39,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-11 14:36:39,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:39,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:39,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-11 14:36:39,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:39,361 INFO L124 PetriNetUnfolderBase]: 597/1161 cut-off events. [2024-10-11 14:36:39,363 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-11 14:36:39,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1161 events. 597/1161 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7158 event pairs, 424 based on Foata normal form. 24/1137 useless extension candidates. Maximal degree in co-relation 2045. Up to 853 conditions per place. [2024-10-11 14:36:39,371 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-11 14:36:39,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 196 flow [2024-10-11 14:36:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-11 14:36:39,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-11 14:36:39,373 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 110 flow. Second operand 3 states and 117 transitions. [2024-10-11 14:36:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 196 flow [2024-10-11 14:36:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:39,378 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 114 flow [2024-10-11 14:36:39,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-10-11 14:36:39,379 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-10-11 14:36:39,379 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 114 flow [2024-10-11 14:36:39,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:39,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:39,380 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] [2024-10-11 14:36:39,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:36:39,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:39,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1382445256, now seen corresponding path program 3 times [2024-10-11 14:36:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:39,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160948821] [2024-10-11 14:36:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:39,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160948821] [2024-10-11 14:36:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160948821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375693891] [2024-10-11 14:36:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:39,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:39,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-11 14:36:39,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:39,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:39,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-11 14:36:39,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:39,769 INFO L124 PetriNetUnfolderBase]: 599/1145 cut-off events. [2024-10-11 14:36:39,771 INFO L125 PetriNetUnfolderBase]: For 144/149 co-relation queries the response was YES. [2024-10-11 14:36:39,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1145 events. 599/1145 cut-off events. For 144/149 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6908 event pairs, 142 based on Foata normal form. 23/1119 useless extension candidates. Maximal degree in co-relation 2222. Up to 857 conditions per place. [2024-10-11 14:36:39,780 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 32 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-11 14:36:39,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 209 flow [2024-10-11 14:36:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-11 14:36:39,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2024-10-11 14:36:39,783 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 114 flow. Second operand 3 states and 119 transitions. [2024-10-11 14:36:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 209 flow [2024-10-11 14:36:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:39,787 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 118 flow [2024-10-11 14:36:39,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-10-11 14:36:39,788 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-10-11 14:36:39,788 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 118 flow [2024-10-11 14:36:39,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:39,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:39,789 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] [2024-10-11 14:36:39,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:36:39,790 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:39,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1544007566, now seen corresponding path program 4 times [2024-10-11 14:36:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437200057] [2024-10-11 14:36:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:39,991 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 14:36:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437200057] [2024-10-11 14:36:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437200057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:39,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:39,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422057930] [2024-10-11 14:36:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:39,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:39,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-11 14:36:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-11 14:36:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:40,136 INFO L124 PetriNetUnfolderBase]: 507/1019 cut-off events. [2024-10-11 14:36:40,136 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-10-11 14:36:40,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1019 events. 507/1019 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5990 event pairs, 156 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 2028. Up to 645 conditions per place. [2024-10-11 14:36:40,147 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-11 14:36:40,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 198 flow [2024-10-11 14:36:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-11 14:36:40,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-10-11 14:36:40,150 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 118 flow. Second operand 3 states and 115 transitions. [2024-10-11 14:36:40,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 198 flow [2024-10-11 14:36:40,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:40,152 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 122 flow [2024-10-11 14:36:40,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-10-11 14:36:40,154 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-10-11 14:36:40,154 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 122 flow [2024-10-11 14:36:40,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:36:40,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:40,155 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] [2024-10-11 14:36:40,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:36:40,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:40,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 161657270, now seen corresponding path program 5 times [2024-10-11 14:36:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:40,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822010285] [2024-10-11 14:36:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,423 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 14:36:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822010285] [2024-10-11 14:36:42,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822010285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:42,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-11 14:36:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047130552] [2024-10-11 14:36:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:42,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:36:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:36:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:36:42,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-11 14:36:42,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 122 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:36:42,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:42,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-11 14:36:42,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:45,625 INFO L124 PetriNetUnfolderBase]: 13819/19920 cut-off events. [2024-10-11 14:36:45,626 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2024-10-11 14:36:45,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43095 conditions, 19920 events. 13819/19920 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 116001 event pairs, 1845 based on Foata normal form. 1/19900 useless extension candidates. Maximal degree in co-relation 12347. Up to 4778 conditions per place. [2024-10-11 14:36:45,754 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 217 selfloop transitions, 13 changer transitions 19/258 dead transitions. [2024-10-11 14:36:45,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 258 transitions, 1129 flow [2024-10-11 14:36:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:36:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:36:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 432 transitions. [2024-10-11 14:36:45,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-10-11 14:36:45,757 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 122 flow. Second operand 14 states and 432 transitions. [2024-10-11 14:36:45,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 258 transitions, 1129 flow [2024-10-11 14:36:45,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 258 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:45,766 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 223 flow [2024-10-11 14:36:45,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=223, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-10-11 14:36:45,767 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-10-11 14:36:45,767 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 223 flow [2024-10-11 14:36:45,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:36:45,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:45,768 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] [2024-10-11 14:36:45,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:36:45,768 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:45,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:45,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1223085626, now seen corresponding path program 6 times [2024-10-11 14:36:45,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:45,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400745254] [2024-10-11 14:36:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:45,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400745254] [2024-10-11 14:36:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400745254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:47,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-11 14:36:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368827285] [2024-10-11 14:36:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:36:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:36:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:36:47,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-11 14:36:47,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 223 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:36:47,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-11 14:36:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:53,493 INFO L124 PetriNetUnfolderBase]: 37970/55199 cut-off events. [2024-10-11 14:36:53,494 INFO L125 PetriNetUnfolderBase]: For 44563/44563 co-relation queries the response was YES. [2024-10-11 14:36:53,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150640 conditions, 55199 events. 37970/55199 cut-off events. For 44563/44563 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 371807 event pairs, 4605 based on Foata normal form. 1/55181 useless extension candidates. Maximal degree in co-relation 150461. Up to 15677 conditions per place. [2024-10-11 14:36:53,952 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 274 selfloop transitions, 25 changer transitions 10/318 dead transitions. [2024-10-11 14:36:53,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 318 transitions, 1826 flow [2024-10-11 14:36:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:36:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:36:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 434 transitions. [2024-10-11 14:36:53,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-10-11 14:36:53,955 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 223 flow. Second operand 14 states and 434 transitions. [2024-10-11 14:36:53,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 318 transitions, 1826 flow [2024-10-11 14:36:54,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 318 transitions, 1784 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:54,833 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 474 flow [2024-10-11 14:36:54,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=474, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-11 14:36:54,834 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2024-10-11 14:36:54,834 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 474 flow [2024-10-11 14:36:54,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:36:54,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:54,835 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] [2024-10-11 14:36:54,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:36:54,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:36:54,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 610348320, now seen corresponding path program 7 times [2024-10-11 14:36:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297824520] [2024-10-11 14:36:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:56,546 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 14:36:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297824520] [2024-10-11 14:36:56,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297824520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:56,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:56,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-11 14:36:56,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854778340] [2024-10-11 14:36:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:56,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:36:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:36:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:36:56,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-11 14:36:56,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 474 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:36:56,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:56,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-11 14:36:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:05,094 INFO L124 PetriNetUnfolderBase]: 62785/91729 cut-off events. [2024-10-11 14:37:05,094 INFO L125 PetriNetUnfolderBase]: For 160282/160282 co-relation queries the response was YES. [2024-10-11 14:37:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284168 conditions, 91729 events. 62785/91729 cut-off events. For 160282/160282 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 668498 event pairs, 11681 based on Foata normal form. 1/91695 useless extension candidates. Maximal degree in co-relation 283747. Up to 20868 conditions per place. [2024-10-11 14:37:05,950 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 288 selfloop transitions, 44 changer transitions 11/352 dead transitions. [2024-10-11 14:37:05,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 352 transitions, 2495 flow [2024-10-11 14:37:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:37:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:37:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-10-11 14:37:05,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-10-11 14:37:05,953 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 474 flow. Second operand 14 states and 428 transitions. [2024-10-11 14:37:05,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 352 transitions, 2495 flow [2024-10-11 14:37:07,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 352 transitions, 2455 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-11 14:37:07,586 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 957 flow [2024-10-11 14:37:07,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=957, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-10-11 14:37:07,586 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2024-10-11 14:37:07,587 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 957 flow [2024-10-11 14:37:07,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:37:07,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:07,587 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] [2024-10-11 14:37:07,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:37:07,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:37:07,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1973642582, now seen corresponding path program 8 times [2024-10-11 14:37:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:07,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115200602] [2024-10-11 14:37:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:09,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:09,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115200602] [2024-10-11 14:37:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115200602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:09,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:37:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-11 14:37:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99266519] [2024-10-11 14:37:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:09,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:37:09,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:37:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:37:09,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-11 14:37:09,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 14:37:09,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:09,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-11 14:37:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:29,729 INFO L124 PetriNetUnfolderBase]: 132857/195105 cut-off events. [2024-10-11 14:37:29,729 INFO L125 PetriNetUnfolderBase]: For 713477/713477 co-relation queries the response was YES. [2024-10-11 14:37:31,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693616 conditions, 195105 events. 132857/195105 cut-off events. For 713477/713477 co-relation queries the response was YES. Maximal size of possible extension queue 6792. Compared 1613741 event pairs, 25938 based on Foata normal form. 1/195087 useless extension candidates. Maximal degree in co-relation 692556. Up to 61893 conditions per place. [2024-10-11 14:37:32,075 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 364 selfloop transitions, 49 changer transitions 10/432 dead transitions. [2024-10-11 14:37:32,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 432 transitions, 4150 flow [2024-10-11 14:37:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:37:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:37:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-10-11 14:37:32,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2024-10-11 14:37:32,078 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 957 flow. Second operand 14 states and 430 transitions. [2024-10-11 14:37:32,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 432 transitions, 4150 flow