/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:10:29,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:10:29,542 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 [2023-08-23 23:10:29,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:10:29,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:10:29,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:10:29,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:10:29,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:10:29,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:10:29,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:10:29,583 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:10:29,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:10:29,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:10:29,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:10:29,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:10:29,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:10:29,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:10:29,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:10:29,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:10:29,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:10:29,587 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:10:29,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:10:29,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:10:29,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:10:29,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:10:29,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:10:29,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:10:29,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:10:29,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:10:29,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:10:29,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:10:29,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:10:29,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:10:29,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:10:29,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:10:29,898 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:10:29,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:31,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:10:31,252 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:10:31,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:31,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d97942e1/25367ae6c1314464aeeb2792e8bb72dd/FLAG72d760bf9 [2023-08-23 23:10:31,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d97942e1/25367ae6c1314464aeeb2792e8bb72dd [2023-08-23 23:10:31,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:10:31,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:10:31,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:10:31,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:10:31,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:10:31,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ad8625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31, skipping insertion in model container [2023-08-23 23:10:31,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,326 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:10:31,467 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:10:31,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:10:31,616 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:10:31,626 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:10:31,643 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:10:31,645 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:10:31,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:10:31,686 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:10:31,686 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:10:31,691 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:10:31,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31 WrapperNode [2023-08-23 23:10:31,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:10:31,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:10:31,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:10:31,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:10:31,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,739 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-23 23:10:31,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:10:31,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:10:31,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:10:31,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:10:31,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:10:31,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:10:31,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:10:31,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:10:31,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (1/1) ... [2023-08-23 23:10:31,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:10:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:10:31,818 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) [2023-08-23 23:10:31,827 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 [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:10:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:10:31,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:10:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:10:31,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:10:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:10:31,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:10:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:10:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:10:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:10:31,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:10:31,842 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:10:31,925 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:10:31,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:10:32,022 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:10:32,026 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:10:32,026 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:10:32,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:10:32 BoogieIcfgContainer [2023-08-23 23:10:32,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:10:32,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:10:32,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:10:32,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:10:32,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:10:31" (1/3) ... [2023-08-23 23:10:32,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64af4e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:10:32, skipping insertion in model container [2023-08-23 23:10:32,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:31" (2/3) ... [2023-08-23 23:10:32,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64af4e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:10:32, skipping insertion in model container [2023-08-23 23:10:32,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:10:32" (3/3) ... [2023-08-23 23:10:32,033 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:32,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:10:32,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:10:32,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:10:32,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:10:32,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-08-23 23:10:32,152 INFO L124 PetriNetUnfolderBase]: 2/80 cut-off events. [2023-08-23 23:10:32,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-23 23:10:32,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-08-23 23:10:32,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-08-23 23:10:32,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:10:32,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-23 23:10:32,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-23 23:10:32,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-08-23 23:10:32,208 INFO L124 PetriNetUnfolderBase]: 1/68 cut-off events. [2023-08-23 23:10:32,208 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:32,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-23 23:10:32,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-08-23 23:10:33,686 INFO L134 LiptonReduction]: Checked pairs total: 1625 [2023-08-23 23:10:33,686 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-23 23:10:33,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:10:33,699 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;@1f89c474, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:10:33,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-23 23:10:33,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:10:33,702 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-23 23:10:33,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:33,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:33,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:33,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:33,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:33,706 INFO L85 PathProgramCache]: Analyzing trace with hash -303430256, now seen corresponding path program 1 times [2023-08-23 23:10:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260841210] [2023-08-23 23:10:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:34,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260841210] [2023-08-23 23:10:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260841210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:34,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:34,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:10:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197886133] [2023-08-23 23:10:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:10:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:34,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:10:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:10:34,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 138 [2023-08-23 23:10:34,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:34,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 138 [2023-08-23 23:10:34,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:34,211 INFO L124 PetriNetUnfolderBase]: 202/349 cut-off events. [2023-08-23 23:10:34,211 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-23 23:10:34,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 349 events. 202/349 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1331 event pairs, 52 based on Foata normal form. 6/355 useless extension candidates. Maximal degree in co-relation 698. Up to 296 conditions per place. [2023-08-23 23:10:34,215 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-23 23:10:34,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 117 flow [2023-08-23 23:10:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:10:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:10:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-23 23:10:34,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5917874396135265 [2023-08-23 23:10:34,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-23 23:10:34,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-23 23:10:34,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:34,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-23 23:10:34,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,247 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 245 transitions. [2023-08-23 23:10:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 117 flow [2023-08-23 23:10:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:10:34,251 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2023-08-23 23:10:34,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-23 23:10:34,254 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-23 23:10:34,255 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2023-08-23 23:10:34,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:34,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:34,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:10:34,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:34,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash -816403933, now seen corresponding path program 1 times [2023-08-23 23:10:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467515424] [2023-08-23 23:10:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:34,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:34,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467515424] [2023-08-23 23:10:34,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467515424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758091647] [2023-08-23 23:10:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:34,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:34,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-08-23 23:10:34,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:34,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-08-23 23:10:34,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:34,492 INFO L124 PetriNetUnfolderBase]: 318/528 cut-off events. [2023-08-23 23:10:34,492 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-23 23:10:34,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 528 events. 318/528 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1946 event pairs, 75 based on Foata normal form. 33/561 useless extension candidates. Maximal degree in co-relation 1202. Up to 257 conditions per place. [2023-08-23 23:10:34,498 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-23 23:10:34,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 144 flow [2023-08-23 23:10:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:10:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:10:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-08-23 23:10:34,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561594202898551 [2023-08-23 23:10:34,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-08-23 23:10:34,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-08-23 23:10:34,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:34,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-08-23 23:10:34,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,507 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,507 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 4 states and 307 transitions. [2023-08-23 23:10:34,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 144 flow [2023-08-23 23:10:34,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:10:34,508 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 80 flow [2023-08-23 23:10:34,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-08-23 23:10:34,509 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-23 23:10:34,510 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 80 flow [2023-08-23 23:10:34,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:34,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:10:34,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:34,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1649101703, now seen corresponding path program 1 times [2023-08-23 23:10:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984886971] [2023-08-23 23:10:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:34,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984886971] [2023-08-23 23:10:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984886971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:34,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939227271] [2023-08-23 23:10:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:34,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 138 [2023-08-23 23:10:34,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:34,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 138 [2023-08-23 23:10:34,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:34,682 INFO L124 PetriNetUnfolderBase]: 327/574 cut-off events. [2023-08-23 23:10:34,682 INFO L125 PetriNetUnfolderBase]: For 366/374 co-relation queries the response was YES. [2023-08-23 23:10:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 574 events. 327/574 cut-off events. For 366/374 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2614 event pairs, 69 based on Foata normal form. 29/597 useless extension candidates. Maximal degree in co-relation 1486. Up to 240 conditions per place. [2023-08-23 23:10:34,685 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 25 selfloop transitions, 3 changer transitions 7/37 dead transitions. [2023-08-23 23:10:34,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 215 flow [2023-08-23 23:10:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:10:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:10:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-23 23:10:34,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706521739130435 [2023-08-23 23:10:34,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-23 23:10:34,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-23 23:10:34,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:34,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-23 23:10:34,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,688 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 80 flow. Second operand 4 states and 315 transitions. [2023-08-23 23:10:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 215 flow [2023-08-23 23:10:34,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 195 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-23 23:10:34,691 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 84 flow [2023-08-23 23:10:34,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-23 23:10:34,693 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-23 23:10:34,695 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 84 flow [2023-08-23 23:10:34,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:34,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:34,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:10:34,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:34,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -417436779, now seen corresponding path program 1 times [2023-08-23 23:10:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:34,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559035076] [2023-08-23 23:10:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559035076] [2023-08-23 23:10:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559035076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612370388] [2023-08-23 23:10:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:34,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-08-23 23:10:34,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:34,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-08-23 23:10:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:34,854 INFO L124 PetriNetUnfolderBase]: 152/298 cut-off events. [2023-08-23 23:10:34,854 INFO L125 PetriNetUnfolderBase]: For 627/650 co-relation queries the response was YES. [2023-08-23 23:10:34,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 298 events. 152/298 cut-off events. For 627/650 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1273 event pairs, 42 based on Foata normal form. 20/309 useless extension candidates. Maximal degree in co-relation 813. Up to 178 conditions per place. [2023-08-23 23:10:34,857 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 22 selfloop transitions, 5 changer transitions 14/45 dead transitions. [2023-08-23 23:10:34,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 258 flow [2023-08-23 23:10:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:10:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:10:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-08-23 23:10:34,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563768115942029 [2023-08-23 23:10:34,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-08-23 23:10:34,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-08-23 23:10:34,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:34,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-08-23 23:10:34,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,860 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,860 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 84 flow. Second operand 5 states and 389 transitions. [2023-08-23 23:10:34,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 258 flow [2023-08-23 23:10:34,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 231 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-23 23:10:34,864 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 114 flow [2023-08-23 23:10:34,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-23 23:10:34,865 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-23 23:10:34,865 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 114 flow [2023-08-23 23:10:34,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:34,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:34,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:10:34,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:34,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -100002717, now seen corresponding path program 1 times [2023-08-23 23:10:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051814252] [2023-08-23 23:10:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:34,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051814252] [2023-08-23 23:10:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051814252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:34,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931124271] [2023-08-23 23:10:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:34,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:10:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:10:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:10:34,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-08-23 23:10:34,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:34,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-08-23 23:10:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:35,053 INFO L124 PetriNetUnfolderBase]: 105/220 cut-off events. [2023-08-23 23:10:35,053 INFO L125 PetriNetUnfolderBase]: For 452/516 co-relation queries the response was YES. [2023-08-23 23:10:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 220 events. 105/220 cut-off events. For 452/516 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 863 event pairs, 15 based on Foata normal form. 34/248 useless extension candidates. Maximal degree in co-relation 773. Up to 124 conditions per place. [2023-08-23 23:10:35,054 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 26 selfloop transitions, 8 changer transitions 17/55 dead transitions. [2023-08-23 23:10:35,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 353 flow [2023-08-23 23:10:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:10:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:10:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-08-23 23:10:35,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2023-08-23 23:10:35,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-08-23 23:10:35,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-08-23 23:10:35,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:35,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-08-23 23:10:35,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,060 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 114 flow. Second operand 7 states and 539 transitions. [2023-08-23 23:10:35,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 353 flow [2023-08-23 23:10:35,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 347 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-23 23:10:35,062 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 166 flow [2023-08-23 23:10:35,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-23 23:10:35,064 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-23 23:10:35,064 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 166 flow [2023-08-23 23:10:35,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:35,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:35,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:10:35,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:35,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 521695694, now seen corresponding path program 1 times [2023-08-23 23:10:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92725216] [2023-08-23 23:10:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92725216] [2023-08-23 23:10:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92725216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260779433] [2023-08-23 23:10:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:35,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 138 [2023-08-23 23:10:35,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:35,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 138 [2023-08-23 23:10:35,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:35,199 INFO L124 PetriNetUnfolderBase]: 124/266 cut-off events. [2023-08-23 23:10:35,200 INFO L125 PetriNetUnfolderBase]: For 632/658 co-relation queries the response was YES. [2023-08-23 23:10:35,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 266 events. 124/266 cut-off events. For 632/658 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1061 event pairs, 26 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1051. Up to 125 conditions per place. [2023-08-23 23:10:35,201 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 23 selfloop transitions, 2 changer transitions 19/46 dead transitions. [2023-08-23 23:10:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 385 flow [2023-08-23 23:10:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:10:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:10:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-08-23 23:10:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670289855072463 [2023-08-23 23:10:35,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-08-23 23:10:35,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-08-23 23:10:35,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:35,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-08-23 23:10:35,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,204 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 166 flow. Second operand 4 states and 313 transitions. [2023-08-23 23:10:35,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 385 flow [2023-08-23 23:10:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 327 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-23 23:10:35,206 INFO L231 Difference]: Finished difference. Result has 41 places, 24 transitions, 131 flow [2023-08-23 23:10:35,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2023-08-23 23:10:35,206 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-23 23:10:35,206 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 131 flow [2023-08-23 23:10:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:35,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:35,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:10:35,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:35,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:35,207 INFO L85 PathProgramCache]: Analyzing trace with hash 23924479, now seen corresponding path program 1 times [2023-08-23 23:10:35,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:35,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546186069] [2023-08-23 23:10:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546186069] [2023-08-23 23:10:35,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546186069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:35,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:35,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:10:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368934591] [2023-08-23 23:10:35,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:35,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:10:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:10:35,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:10:35,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-08-23 23:10:35,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:35,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-08-23 23:10:35,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:35,369 INFO L124 PetriNetUnfolderBase]: 75/178 cut-off events. [2023-08-23 23:10:35,370 INFO L125 PetriNetUnfolderBase]: For 251/296 co-relation queries the response was YES. [2023-08-23 23:10:35,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 178 events. 75/178 cut-off events. For 251/296 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 728 event pairs, 14 based on Foata normal form. 26/197 useless extension candidates. Maximal degree in co-relation 614. Up to 63 conditions per place. [2023-08-23 23:10:35,370 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-23 23:10:35,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 265 flow [2023-08-23 23:10:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:10:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:10:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2023-08-23 23:10:35,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2023-08-23 23:10:35,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2023-08-23 23:10:35,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2023-08-23 23:10:35,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:35,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2023-08-23 23:10:35,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,375 INFO L175 Difference]: Start difference. First operand has 41 places, 24 transitions, 131 flow. Second operand 7 states and 525 transitions. [2023-08-23 23:10:35,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 265 flow [2023-08-23 23:10:35,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 249 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-23 23:10:35,377 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-23 23:10:35,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-23 23:10:35,377 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-23 23:10:35,378 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-23 23:10:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:35,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-23 23:10:35,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-23 23:10:35,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-23 23:10:35,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-23 23:10:35,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:10:35,380 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:35,382 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:10:35,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:10:35,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:10:35 BasicIcfg [2023-08-23 23:10:35,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:10:35,388 INFO L158 Benchmark]: Toolchain (without parser) took 4107.69ms. Allocated memory was 434.1MB in the beginning and 587.2MB in the end (delta: 153.1MB). Free memory was 409.1MB in the beginning and 452.7MB in the end (delta: -43.6MB). Peak memory consumption was 109.9MB. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 434.1MB. Free memory is still 409.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.75ms. Allocated memory is still 434.1MB. Free memory was 408.7MB in the beginning and 388.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.02ms. Allocated memory is still 434.1MB. Free memory was 387.8MB in the beginning and 386.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: Boogie Preprocessor took 32.88ms. Allocated memory is still 434.1MB. Free memory was 386.1MB in the beginning and 384.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: RCFGBuilder took 254.23ms. Allocated memory is still 434.1MB. Free memory was 384.4MB in the beginning and 370.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:10:35,389 INFO L158 Benchmark]: TraceAbstraction took 3355.34ms. Allocated memory was 434.1MB in the beginning and 587.2MB in the end (delta: 153.1MB). Free memory was 370.2MB in the beginning and 452.7MB in the end (delta: -82.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.0GB. [2023-08-23 23:10:35,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 434.1MB. Free memory is still 409.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 413.75ms. Allocated memory is still 434.1MB. Free memory was 408.7MB in the beginning and 388.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.02ms. Allocated memory is still 434.1MB. Free memory was 387.8MB in the beginning and 386.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.88ms. Allocated memory is still 434.1MB. Free memory was 386.1MB in the beginning and 384.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 254.23ms. Allocated memory is still 434.1MB. Free memory was 384.4MB in the beginning and 370.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3355.34ms. Allocated memory was 434.1MB in the beginning and 587.2MB in the end (delta: 153.1MB). Free memory was 370.2MB in the beginning and 452.7MB in the end (delta: -82.5MB). Peak memory consumption was 72.1MB. 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: 1.5s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1625 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 906, independent: 840, independent conditional: 0, independent unconditional: 840, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 529, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 906, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 529, unknown conditional: 0, unknown unconditional: 529] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 7 procedures, 105 locations, 4 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: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 328 IncrementalHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 4 mSDtfsCounter, 328 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=5, InterpolantAutomatonStates: 34, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2023-08-23 23:10:35,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...