/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:48:39,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:48:39,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:48:39,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:48:39,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:48:40,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:48:40,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:48:40,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:48:40,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:48:40,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:48:40,007 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:48:40,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:48:40,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:48:40,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:48:40,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:48:40,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:48:40,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:48:40,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:48:40,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:48:40,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:48:40,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:48:40,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:48:40,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:48:40,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:48:40,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:48:40,012 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:48:40,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:48:40,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:48:40,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:48:40,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:48:40,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:48:40,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:48:40,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:48:40,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:48:40,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:48:40,015 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:48:40,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:48:40,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:48:40,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:48:40,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:48:40,356 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:48:40,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:48:41,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:48:41,784 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:48:41,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:48:41,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e678794/1b2b7a6c11cd4e1a8baf129f9004b182/FLAGe810b0471 [2023-08-24 11:48:41,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e678794/1b2b7a6c11cd4e1a8baf129f9004b182 [2023-08-24 11:48:41,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:48:41,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:48:41,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:48:41,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:48:41,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:48:41,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:48:41" (1/1) ... [2023-08-24 11:48:41,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779e4338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:41, skipping insertion in model container [2023-08-24 11:48:41,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:48:41" (1/1) ... [2023-08-24 11:48:41,892 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:48:42,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:48:42,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:48:42,231 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:48:42,242 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:48:42,258 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:48:42,260 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:48:42,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:48:42,326 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:48:42,326 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:48:42,332 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:48:42,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42 WrapperNode [2023-08-24 11:48:42,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:48:42,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:48:42,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:48:42,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:48:42,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,390 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-08-24 11:48:42,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:48:42,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:48:42,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:48:42,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:48:42,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:48:42,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:48:42,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:48:42,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:48:42,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (1/1) ... [2023-08-24 11:48:42,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:48:42,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:48:42,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 11:48:42,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 11:48:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:48:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:48:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:48:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:48:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:48:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:48:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:48:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:48:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:48:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:48:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:48:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-24 11:48:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-24 11:48:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:48:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:48:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:48:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:48:42,524 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:48:42,683 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:48:42,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:48:42,904 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:48:42,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:48:42,910 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:48:42,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:48:42 BoogieIcfgContainer [2023-08-24 11:48:42,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:48:42,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:48:42,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:48:42,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:48:42,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:48:41" (1/3) ... [2023-08-24 11:48:42,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da3bd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:48:42, skipping insertion in model container [2023-08-24 11:48:42,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:48:42" (2/3) ... [2023-08-24 11:48:42,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da3bd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:48:42, skipping insertion in model container [2023-08-24 11:48:42,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:48:42" (3/3) ... [2023-08-24 11:48:42,920 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:48:42,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:48:42,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:48:42,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:48:42,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:48:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2023-08-24 11:48:43,072 INFO L124 PetriNetUnfolderBase]: 2/94 cut-off events. [2023-08-24 11:48:43,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:48:43,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-24 11:48:43,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 98 transitions, 216 flow [2023-08-24 11:48:43,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2023-08-24 11:48:43,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:48:43,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2023-08-24 11:48:43,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2023-08-24 11:48:43,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2023-08-24 11:48:43,112 INFO L124 PetriNetUnfolderBase]: 1/80 cut-off events. [2023-08-24 11:48:43,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:48:43,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-24 11:48:43,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-08-24 11:48:45,120 INFO L134 LiptonReduction]: Checked pairs total: 2424 [2023-08-24 11:48:45,120 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-24 11:48:45,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:48:45,138 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5a3d7f85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:48:45,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 11:48:45,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:48:45,145 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-24 11:48:45,145 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:48:45,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:45,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:45,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:45,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1184454526, now seen corresponding path program 1 times [2023-08-24 11:48:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189886183] [2023-08-24 11:48:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189886183] [2023-08-24 11:48:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189886183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:48:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468267748] [2023-08-24 11:48:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:45,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:48:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:48:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:48:45,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:45,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:45,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:45,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:45,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:45,990 INFO L124 PetriNetUnfolderBase]: 2019/2943 cut-off events. [2023-08-24 11:48:45,990 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-24 11:48:45,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13535 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-08-24 11:48:46,014 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-08-24 11:48:46,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-08-24 11:48:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:48:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:48:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-24 11:48:46,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720164609053497 [2023-08-24 11:48:46,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-24 11:48:46,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-24 11:48:46,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:46,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-24 11:48:46,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,046 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 278 transitions. [2023-08-24 11:48:46,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-08-24 11:48:46,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 11:48:46,053 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-08-24 11:48:46,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-24 11:48:46,057 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-24 11:48:46,057 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-08-24 11:48:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:46,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:46,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:48:46,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:46,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616182, now seen corresponding path program 1 times [2023-08-24 11:48:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480648265] [2023-08-24 11:48:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:46,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:46,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480648265] [2023-08-24 11:48:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480648265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:46,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:46,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:48:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930450837] [2023-08-24 11:48:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:46,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:46,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:46,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:46,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:46,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:46,439 INFO L124 PetriNetUnfolderBase]: 1886/2759 cut-off events. [2023-08-24 11:48:46,439 INFO L125 PetriNetUnfolderBase]: For 1170/1170 co-relation queries the response was YES. [2023-08-24 11:48:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12651 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-08-24 11:48:46,458 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-24 11:48:46,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-08-24 11:48:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2023-08-24 11:48:46,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2023-08-24 11:48:46,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2023-08-24 11:48:46,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2023-08-24 11:48:46,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:46,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2023-08-24 11:48:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,467 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 363 transitions. [2023-08-24 11:48:46,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-08-24 11:48:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:48:46,478 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-08-24 11:48:46,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-24 11:48:46,481 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-24 11:48:46,482 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-08-24 11:48:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:46,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:46,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:48:46,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:46,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616027, now seen corresponding path program 1 times [2023-08-24 11:48:46,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219369929] [2023-08-24 11:48:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219369929] [2023-08-24 11:48:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219369929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:46,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:48:46,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891858203] [2023-08-24 11:48:46,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:46,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:48:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:48:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:48:46,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 162 [2023-08-24 11:48:46,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:46,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 162 [2023-08-24 11:48:46,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:46,869 INFO L124 PetriNetUnfolderBase]: 1670/2478 cut-off events. [2023-08-24 11:48:46,869 INFO L125 PetriNetUnfolderBase]: For 2578/2623 co-relation queries the response was YES. [2023-08-24 11:48:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 2478 events. 1670/2478 cut-off events. For 2578/2623 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11425 event pairs, 416 based on Foata normal form. 18/2488 useless extension candidates. Maximal degree in co-relation 7383. Up to 2016 conditions per place. [2023-08-24 11:48:46,888 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 36 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-08-24 11:48:46,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 304 flow [2023-08-24 11:48:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:48:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:48:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-24 11:48:46,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-08-24 11:48:46,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-24 11:48:46,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-24 11:48:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:46,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-24 11:48:46,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,895 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 3 states and 288 transitions. [2023-08-24 11:48:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 304 flow [2023-08-24 11:48:46,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:48:46,902 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 195 flow [2023-08-24 11:48:46,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-24 11:48:46,904 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-24 11:48:46,906 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 195 flow [2023-08-24 11:48:46,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:46,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:46,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:46,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:48:46,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:46,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -481665748, now seen corresponding path program 1 times [2023-08-24 11:48:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29016824] [2023-08-24 11:48:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29016824] [2023-08-24 11:48:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29016824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:47,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:48:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725244992] [2023-08-24 11:48:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:47,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:48:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:48:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:48:47,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 162 [2023-08-24 11:48:47,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:47,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 162 [2023-08-24 11:48:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:47,232 INFO L124 PetriNetUnfolderBase]: 1401/2161 cut-off events. [2023-08-24 11:48:47,233 INFO L125 PetriNetUnfolderBase]: For 2532/2583 co-relation queries the response was YES. [2023-08-24 11:48:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 2161 events. 1401/2161 cut-off events. For 2532/2583 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10622 event pairs, 671 based on Foata normal form. 53/2159 useless extension candidates. Maximal degree in co-relation 6846. Up to 1660 conditions per place. [2023-08-24 11:48:47,249 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 42 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-24 11:48:47,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 377 flow [2023-08-24 11:48:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:48:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:48:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-24 11:48:47,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090534979423868 [2023-08-24 11:48:47,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-24 11:48:47,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-24 11:48:47,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:47,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-24 11:48:47,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,253 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 195 flow. Second operand 3 states and 296 transitions. [2023-08-24 11:48:47,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 377 flow [2023-08-24 11:48:47,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:48:47,258 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 203 flow [2023-08-24 11:48:47,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-24 11:48:47,259 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-24 11:48:47,259 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 203 flow [2023-08-24 11:48:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:47,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:47,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:48:47,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:47,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1367333638, now seen corresponding path program 1 times [2023-08-24 11:48:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328815531] [2023-08-24 11:48:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:47,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328815531] [2023-08-24 11:48:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328815531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:48:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575368330] [2023-08-24 11:48:47,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:47,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:47,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:47,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:47,569 INFO L124 PetriNetUnfolderBase]: 1673/2462 cut-off events. [2023-08-24 11:48:47,570 INFO L125 PetriNetUnfolderBase]: For 3140/3140 co-relation queries the response was YES. [2023-08-24 11:48:47,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2462 events. 1673/2462 cut-off events. For 3140/3140 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11217 event pairs, 241 based on Foata normal form. 8/2470 useless extension candidates. Maximal degree in co-relation 8156. Up to 1319 conditions per place. [2023-08-24 11:48:47,587 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 50 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-08-24 11:48:47,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 503 flow [2023-08-24 11:48:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-08-24 11:48:47,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725308641975309 [2023-08-24 11:48:47,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-08-24 11:48:47,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-08-24 11:48:47,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:47,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-08-24 11:48:47,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,592 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 203 flow. Second operand 4 states and 371 transitions. [2023-08-24 11:48:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 503 flow [2023-08-24 11:48:47,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:48:47,599 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 375 flow [2023-08-24 11:48:47,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-08-24 11:48:47,601 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-24 11:48:47,601 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 375 flow [2023-08-24 11:48:47,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:47,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:47,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:48:47,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:47,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1279001014, now seen corresponding path program 1 times [2023-08-24 11:48:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139761101] [2023-08-24 11:48:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139761101] [2023-08-24 11:48:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139761101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:48:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687559403] [2023-08-24 11:48:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:47,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:47,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:47,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:48,034 INFO L124 PetriNetUnfolderBase]: 1913/2858 cut-off events. [2023-08-24 11:48:48,034 INFO L125 PetriNetUnfolderBase]: For 6865/6865 co-relation queries the response was YES. [2023-08-24 11:48:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10356 conditions, 2858 events. 1913/2858 cut-off events. For 6865/6865 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13608 event pairs, 430 based on Foata normal form. 36/2894 useless extension candidates. Maximal degree in co-relation 10334. Up to 1248 conditions per place. [2023-08-24 11:48:48,062 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 50 selfloop transitions, 22 changer transitions 1/73 dead transitions. [2023-08-24 11:48:48,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 632 flow [2023-08-24 11:48:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-08-24 11:48:48,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-08-24 11:48:48,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-08-24 11:48:48,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-08-24 11:48:48,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:48,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-08-24 11:48:48,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,068 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 375 flow. Second operand 4 states and 372 transitions. [2023-08-24 11:48:48,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 632 flow [2023-08-24 11:48:48,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:48:48,082 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 503 flow [2023-08-24 11:48:48,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-24 11:48:48,084 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-24 11:48:48,084 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 503 flow [2023-08-24 11:48:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:48,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:48:48,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:48,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 561540036, now seen corresponding path program 1 times [2023-08-24 11:48:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87689366] [2023-08-24 11:48:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87689366] [2023-08-24 11:48:48,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87689366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:48,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:48,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:48:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171049615] [2023-08-24 11:48:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:48,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-08-24 11:48:48,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:48,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-08-24 11:48:48,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:48,551 INFO L124 PetriNetUnfolderBase]: 2267/3512 cut-off events. [2023-08-24 11:48:48,551 INFO L125 PetriNetUnfolderBase]: For 13128/13173 co-relation queries the response was YES. [2023-08-24 11:48:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13313 conditions, 3512 events. 2267/3512 cut-off events. For 13128/13173 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18834 event pairs, 531 based on Foata normal form. 77/3569 useless extension candidates. Maximal degree in co-relation 13286. Up to 1632 conditions per place. [2023-08-24 11:48:48,567 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 48 selfloop transitions, 8 changer transitions 19/80 dead transitions. [2023-08-24 11:48:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 912 flow [2023-08-24 11:48:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-08-24 11:48:48,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2023-08-24 11:48:48,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-08-24 11:48:48,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-08-24 11:48:48,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:48,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-08-24 11:48:48,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,575 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 503 flow. Second operand 4 states and 381 transitions. [2023-08-24 11:48:48,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 912 flow [2023-08-24 11:48:48,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 902 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-24 11:48:48,597 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 463 flow [2023-08-24 11:48:48,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-24 11:48:48,598 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-24 11:48:48,598 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 463 flow [2023-08-24 11:48:48,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:48,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:48,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:48:48,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:48,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash 418856582, now seen corresponding path program 1 times [2023-08-24 11:48:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856760559] [2023-08-24 11:48:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:48,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:48,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856760559] [2023-08-24 11:48:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856760559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:48:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006311576] [2023-08-24 11:48:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:48,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:48,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:48,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:48,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:48,957 INFO L124 PetriNetUnfolderBase]: 1459/2232 cut-off events. [2023-08-24 11:48:48,958 INFO L125 PetriNetUnfolderBase]: For 8165/8165 co-relation queries the response was YES. [2023-08-24 11:48:48,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8506 conditions, 2232 events. 1459/2232 cut-off events. For 8165/8165 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10705 event pairs, 356 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 8476. Up to 1124 conditions per place. [2023-08-24 11:48:48,972 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 42 selfloop transitions, 18 changer transitions 4/64 dead transitions. [2023-08-24 11:48:48,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 693 flow [2023-08-24 11:48:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-08-24 11:48:48,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632716049382716 [2023-08-24 11:48:48,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-08-24 11:48:48,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-08-24 11:48:48,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:48,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-08-24 11:48:48,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,977 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 463 flow. Second operand 4 states and 365 transitions. [2023-08-24 11:48:48,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 693 flow [2023-08-24 11:48:48,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 668 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-24 11:48:48,990 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 509 flow [2023-08-24 11:48:48,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-24 11:48:48,992 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-24 11:48:48,992 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 509 flow [2023-08-24 11:48:48,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:48,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:48,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:48,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:48:48,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:48,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 542011896, now seen corresponding path program 2 times [2023-08-24 11:48:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295333493] [2023-08-24 11:48:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295333493] [2023-08-24 11:48:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295333493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:49,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:49,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:48:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431559256] [2023-08-24 11:48:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:48:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:48:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:48:49,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-24 11:48:49,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:49,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-24 11:48:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:49,372 INFO L124 PetriNetUnfolderBase]: 1127/1841 cut-off events. [2023-08-24 11:48:49,372 INFO L125 PetriNetUnfolderBase]: For 10282/10408 co-relation queries the response was YES. [2023-08-24 11:48:49,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 1841 events. 1127/1841 cut-off events. For 10282/10408 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10237 event pairs, 281 based on Foata normal form. 111/1920 useless extension candidates. Maximal degree in co-relation 6749. Up to 1213 conditions per place. [2023-08-24 11:48:49,380 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 66 selfloop transitions, 9 changer transitions 26/110 dead transitions. [2023-08-24 11:48:49,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 110 transitions, 1481 flow [2023-08-24 11:48:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:48:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:48:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2023-08-24 11:48:49,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728395061728395 [2023-08-24 11:48:49,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2023-08-24 11:48:49,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2023-08-24 11:48:49,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:49,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2023-08-24 11:48:49,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,385 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 509 flow. Second operand 5 states and 464 transitions. [2023-08-24 11:48:49,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 110 transitions, 1481 flow [2023-08-24 11:48:49,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 110 transitions, 1397 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-24 11:48:49,393 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 548 flow [2023-08-24 11:48:49,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2023-08-24 11:48:49,393 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-24 11:48:49,394 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 548 flow [2023-08-24 11:48:49,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:49,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:49,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 11:48:49,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:49,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 68625228, now seen corresponding path program 1 times [2023-08-24 11:48:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:49,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482205360] [2023-08-24 11:48:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:49,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482205360] [2023-08-24 11:48:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482205360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:49,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:48:49,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518837640] [2023-08-24 11:48:49,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:49,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:48:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:49,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:48:49,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:48:49,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-24 11:48:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-24 11:48:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:49,720 INFO L124 PetriNetUnfolderBase]: 1076/1837 cut-off events. [2023-08-24 11:48:49,721 INFO L125 PetriNetUnfolderBase]: For 9689/10057 co-relation queries the response was YES. [2023-08-24 11:48:49,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8911 conditions, 1837 events. 1076/1837 cut-off events. For 9689/10057 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10768 event pairs, 83 based on Foata normal form. 167/1977 useless extension candidates. Maximal degree in co-relation 8876. Up to 1148 conditions per place. [2023-08-24 11:48:49,731 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 82 selfloop transitions, 17 changer transitions 36/144 dead transitions. [2023-08-24 11:48:49,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 144 transitions, 1902 flow [2023-08-24 11:48:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:48:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:48:49,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2023-08-24 11:48:49,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-08-24 11:48:49,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2023-08-24 11:48:49,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2023-08-24 11:48:49,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:49,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2023-08-24 11:48:49,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,738 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 548 flow. Second operand 7 states and 648 transitions. [2023-08-24 11:48:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 144 transitions, 1902 flow [2023-08-24 11:48:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 144 transitions, 1829 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:48:49,750 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 643 flow [2023-08-24 11:48:49,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-08-24 11:48:49,751 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-24 11:48:49,751 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 643 flow [2023-08-24 11:48:49,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:49,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:49,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 11:48:49,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:49,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1838314156, now seen corresponding path program 1 times [2023-08-24 11:48:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312356484] [2023-08-24 11:48:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312356484] [2023-08-24 11:48:49,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312356484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:49,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:49,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:48:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875642696] [2023-08-24 11:48:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:48:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:48:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:48:49,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-24 11:48:49,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 643 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:49,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:49,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-24 11:48:49,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:50,116 INFO L124 PetriNetUnfolderBase]: 943/1672 cut-off events. [2023-08-24 11:48:50,117 INFO L125 PetriNetUnfolderBase]: For 9443/10005 co-relation queries the response was YES. [2023-08-24 11:48:50,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9839 conditions, 1672 events. 943/1672 cut-off events. For 9443/10005 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10044 event pairs, 24 based on Foata normal form. 212/1859 useless extension candidates. Maximal degree in co-relation 9801. Up to 1021 conditions per place. [2023-08-24 11:48:50,127 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 72 selfloop transitions, 13 changer transitions 75/168 dead transitions. [2023-08-24 11:48:50,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 168 transitions, 2206 flow [2023-08-24 11:48:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 11:48:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 11:48:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 832 transitions. [2023-08-24 11:48:50,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706447187928669 [2023-08-24 11:48:50,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 832 transitions. [2023-08-24 11:48:50,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 832 transitions. [2023-08-24 11:48:50,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:50,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 832 transitions. [2023-08-24 11:48:50,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.44444444444444) internal successors, (832), 9 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,135 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,135 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 643 flow. Second operand 9 states and 832 transitions. [2023-08-24 11:48:50,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 168 transitions, 2206 flow [2023-08-24 11:48:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 168 transitions, 2161 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-24 11:48:50,168 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 632 flow [2023-08-24 11:48:50,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2023-08-24 11:48:50,169 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2023-08-24 11:48:50,169 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 632 flow [2023-08-24 11:48:50,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:50,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:50,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 11:48:50,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:50,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 660281447, now seen corresponding path program 1 times [2023-08-24 11:48:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593952577] [2023-08-24 11:48:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:50,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:50,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593952577] [2023-08-24 11:48:50,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593952577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:50,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:48:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489151360] [2023-08-24 11:48:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:50,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:48:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:48:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:48:50,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 632 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:50,430 INFO L124 PetriNetUnfolderBase]: 569/1004 cut-off events. [2023-08-24 11:48:50,430 INFO L125 PetriNetUnfolderBase]: For 7692/7692 co-relation queries the response was YES. [2023-08-24 11:48:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 1004 events. 569/1004 cut-off events. For 7692/7692 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4801 event pairs, 63 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 6072. Up to 468 conditions per place. [2023-08-24 11:48:50,436 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 53 selfloop transitions, 16 changer transitions 65/134 dead transitions. [2023-08-24 11:48:50,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 134 transitions, 1678 flow [2023-08-24 11:48:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:48:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:48:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-08-24 11:48:50,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565843621399177 [2023-08-24 11:48:50,439 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-08-24 11:48:50,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-08-24 11:48:50,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:50,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-08-24 11:48:50,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,442 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,442 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 632 flow. Second operand 6 states and 541 transitions. [2023-08-24 11:48:50,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 134 transitions, 1678 flow [2023-08-24 11:48:50,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 1350 flow, removed 118 selfloop flow, removed 9 redundant places. [2023-08-24 11:48:50,469 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 505 flow [2023-08-24 11:48:50,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-24 11:48:50,470 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2023-08-24 11:48:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 505 flow [2023-08-24 11:48:50,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:50,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 11:48:50,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:50,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash 625563137, now seen corresponding path program 2 times [2023-08-24 11:48:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421004352] [2023-08-24 11:48:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:50,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:50,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421004352] [2023-08-24 11:48:50,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421004352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:50,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:50,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:48:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288288805] [2023-08-24 11:48:50,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 11:48:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 11:48:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 11:48:50,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-24 11:48:50,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:50,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-24 11:48:50,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:50,705 INFO L124 PetriNetUnfolderBase]: 225/429 cut-off events. [2023-08-24 11:48:50,705 INFO L125 PetriNetUnfolderBase]: For 2284/2382 co-relation queries the response was YES. [2023-08-24 11:48:50,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 429 events. 225/429 cut-off events. For 2284/2382 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1858 event pairs, 12 based on Foata normal form. 55/473 useless extension candidates. Maximal degree in co-relation 2122. Up to 140 conditions per place. [2023-08-24 11:48:50,707 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 21 selfloop transitions, 17 changer transitions 45/85 dead transitions. [2023-08-24 11:48:50,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 1064 flow [2023-08-24 11:48:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:48:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:48:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 721 transitions. [2023-08-24 11:48:50,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563271604938271 [2023-08-24 11:48:50,710 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 721 transitions. [2023-08-24 11:48:50,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 721 transitions. [2023-08-24 11:48:50,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:50,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 721 transitions. [2023-08-24 11:48:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.125) internal successors, (721), 8 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,714 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,714 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 505 flow. Second operand 8 states and 721 transitions. [2023-08-24 11:48:50,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 1064 flow [2023-08-24 11:48:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 927 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-24 11:48:50,722 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 290 flow [2023-08-24 11:48:50,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2023-08-24 11:48:50,722 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2023-08-24 11:48:50,723 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 290 flow [2023-08-24 11:48:50,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:48:50,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:50,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 11:48:50,723 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:48:50,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:48:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash 406969096, now seen corresponding path program 1 times [2023-08-24 11:48:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:48:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250437278] [2023-08-24 11:48:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:48:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:48:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:48:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:48:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:48:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250437278] [2023-08-24 11:48:50,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250437278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:48:50,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:48:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:48:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163262032] [2023-08-24 11:48:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:48:50,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:48:50,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:48:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:48:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:48:50,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-08-24 11:48:50,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:48:50,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-08-24 11:48:50,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:48:50,876 INFO L124 PetriNetUnfolderBase]: 44/94 cut-off events. [2023-08-24 11:48:50,876 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2023-08-24 11:48:50,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 94 events. 44/94 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 522. Up to 57 conditions per place. [2023-08-24 11:48:50,877 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-24 11:48:50,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 35 transitions, 372 flow [2023-08-24 11:48:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:48:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:48:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-24 11:48:50,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-08-24 11:48:50,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-24 11:48:50,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-24 11:48:50,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:48:50,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-24 11:48:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,881 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 290 flow. Second operand 4 states and 342 transitions. [2023-08-24 11:48:50,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 35 transitions, 372 flow [2023-08-24 11:48:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 240 flow, removed 16 selfloop flow, removed 25 redundant places. [2023-08-24 11:48:50,883 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-24 11:48:50,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-24 11:48:50,884 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-24 11:48:50,884 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-24 11:48:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:48:50,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 11:48:50,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 11:48:50,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 11:48:50,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 11:48:50,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 11:48:50,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 11:48:50,887 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:48:50,889 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:48:50,890 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:48:50,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:48:50 BasicIcfg [2023-08-24 11:48:50,892 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:48:50,892 INFO L158 Benchmark]: Toolchain (without parser) took 9060.66ms. Allocated memory was 348.1MB in the beginning and 522.2MB in the end (delta: 174.1MB). Free memory was 321.9MB in the beginning and 273.8MB in the end (delta: 48.1MB). Peak memory consumption was 223.7MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,892 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory is still 324.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:48:50,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.09ms. Allocated memory is still 348.1MB. Free memory was 321.9MB in the beginning and 301.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.32ms. Allocated memory is still 348.1MB. Free memory was 301.3MB in the beginning and 299.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,893 INFO L158 Benchmark]: Boogie Preprocessor took 48.02ms. Allocated memory is still 348.1MB. Free memory was 299.2MB in the beginning and 297.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,893 INFO L158 Benchmark]: RCFGBuilder took 472.80ms. Allocated memory is still 348.1MB. Free memory was 297.5MB in the beginning and 283.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,893 INFO L158 Benchmark]: TraceAbstraction took 7977.10ms. Allocated memory was 348.1MB in the beginning and 522.2MB in the end (delta: 174.1MB). Free memory was 282.5MB in the beginning and 273.8MB in the end (delta: 8.7MB). Peak memory consumption was 183.8MB. Max. memory is 16.0GB. [2023-08-24 11:48:50,894 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory is still 324.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 498.09ms. Allocated memory is still 348.1MB. Free memory was 321.9MB in the beginning and 301.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.32ms. Allocated memory is still 348.1MB. Free memory was 301.3MB in the beginning and 299.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.02ms. Allocated memory is still 348.1MB. Free memory was 299.2MB in the beginning and 297.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 472.80ms. Allocated memory is still 348.1MB. Free memory was 297.5MB in the beginning and 283.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7977.10ms. Allocated memory was 348.1MB in the beginning and 522.2MB in the end (delta: 174.1MB). Free memory was 282.5MB in the beginning and 273.8MB in the end (delta: 8.7MB). Peak memory consumption was 183.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 854 IncrementalHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 23 mSDtfsCounter, 854 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=10, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:48:50,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...