/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:05:05,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:05:05,853 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-SemanticLbe.epf [2023-11-17 16:05:05,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:05:05,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:05:05,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:05:05,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:05:05,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:05:05,898 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:05:05,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:05:05,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:05:05,903 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:05:05,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:05:05,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:05:05,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:05:05,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:05:05,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:05:05,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:05:05,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:05:05,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:05:05,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:05:05,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:05:05,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:05:05,907 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:05:05,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:05:05,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:05,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:05:05,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:05:05,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:05:05,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:05:05,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:05:05,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:05:05,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:05:06,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:05:06,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:05:06,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:05:06,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:05:06,192 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:05:06,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-17 16:05:07,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:05:07,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:05:07,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-17 16:05:07,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd41db437/4decb337b9a74c9a82bf26a1c16fb846/FLAGedfb070e5 [2023-11-17 16:05:07,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd41db437/4decb337b9a74c9a82bf26a1c16fb846 [2023-11-17 16:05:07,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:05:07,573 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:05:07,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:07,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:05:07,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:05:07,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1512006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07, skipping insertion in model container [2023-11-17 16:05:07,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:05:07,757 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-17 16:05:07,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:07,777 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:05:07,803 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-17 16:05:07,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:07,822 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:07,822 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:07,828 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:05:07,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07 WrapperNode [2023-11-17 16:05:07,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:07,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:07,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:05:07,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:05:07,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,881 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 307 [2023-11-17 16:05:07,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:07,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:05:07,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:05:07,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:05:07,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:05:07,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:05:07,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:05:07,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:05:07,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (1/1) ... [2023-11-17 16:05:07,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:07,972 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) [2023-11-17 16:05:08,002 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 [2023-11-17 16:05:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:05:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:05:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:05:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:05:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:05:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:05:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:05:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:05:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:05:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:05:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:05:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:05:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:05:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 16:05:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 16:05:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 16:05:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 16:05:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:05:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:05:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:05:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:05:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:05:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:05:08,017 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:05:08,179 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:05:08,181 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:05:08,688 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:05:08,925 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:05:08,925 INFO L307 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-17 16:05:08,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:08 BoogieIcfgContainer [2023-11-17 16:05:08,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:05:08,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:05:08,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:05:08,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:05:08,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:05:07" (1/3) ... [2023-11-17 16:05:08,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c15f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:08, skipping insertion in model container [2023-11-17 16:05:08,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:07" (2/3) ... [2023-11-17 16:05:08,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c15f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:08, skipping insertion in model container [2023-11-17 16:05:08,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:08" (3/3) ... [2023-11-17 16:05:08,935 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-11-17 16:05:08,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:05:08,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:05:08,949 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:05:09,092 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-17 16:05:09,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 277 transitions, 620 flow [2023-11-17 16:05:09,278 INFO L124 PetriNetUnfolderBase]: 18/249 cut-off events. [2023-11-17 16:05:09,279 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:09,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 249 events. 18/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 215. Up to 3 conditions per place. [2023-11-17 16:05:09,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 277 transitions, 620 flow [2023-11-17 16:05:09,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 240 transitions, 528 flow [2023-11-17 16:05:09,294 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:05:09,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 240 transitions, 528 flow [2023-11-17 16:05:09,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 240 transitions, 528 flow [2023-11-17 16:05:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 240 transitions, 528 flow [2023-11-17 16:05:09,360 INFO L124 PetriNetUnfolderBase]: 18/240 cut-off events. [2023-11-17 16:05:09,360 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:09,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 240 events. 18/240 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 215. Up to 3 conditions per place. [2023-11-17 16:05:09,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 8796 [2023-11-17 16:05:15,180 INFO L134 LiptonReduction]: Checked pairs total: 33576 [2023-11-17 16:05:15,181 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-11-17 16:05:15,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:05:15,200 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@799cd6bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:05:15,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-17 16:05:15,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:05:15,212 INFO L124 PetriNetUnfolderBase]: 9/68 cut-off events. [2023-11-17 16:05:15,212 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:15,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:15,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:15,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1426897157, now seen corresponding path program 1 times [2023-11-17 16:05:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412955345] [2023-11-17 16:05:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:15,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412955345] [2023-11-17 16:05:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412955345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:15,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:05:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092667158] [2023-11-17 16:05:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:15,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:15,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:05:15,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 480 [2023-11-17 16:05:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 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) [2023-11-17 16:05:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:15,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 480 [2023-11-17 16:05:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:21,076 INFO L124 PetriNetUnfolderBase]: 43386/57154 cut-off events. [2023-11-17 16:05:21,077 INFO L125 PetriNetUnfolderBase]: For 7256/7302 co-relation queries the response was YES. [2023-11-17 16:05:21,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118820 conditions, 57154 events. 43386/57154 cut-off events. For 7256/7302 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 330557 event pairs, 13879 based on Foata normal form. 15/42232 useless extension candidates. Maximal degree in co-relation 117080. Up to 28379 conditions per place. [2023-11-17 16:05:21,540 INFO L140 encePairwiseOnDemand]: 473/480 looper letters, 112 selfloop transitions, 8 changer transitions 1/143 dead transitions. [2023-11-17 16:05:21,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 657 flow [2023-11-17 16:05:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1034 transitions. [2023-11-17 16:05:21,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385416666666667 [2023-11-17 16:05:21,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1034 transitions. [2023-11-17 16:05:21,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1034 transitions. [2023-11-17 16:05:21,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:21,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1034 transitions. [2023-11-17 16:05:21,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 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) [2023-11-17 16:05:21,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 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) [2023-11-17 16:05:21,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 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) [2023-11-17 16:05:21,595 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 186 flow. Second operand 4 states and 1034 transitions. [2023-11-17 16:05:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 657 flow [2023-11-17 16:05:21,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 571 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 16:05:21,803 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 207 flow [2023-11-17 16:05:21,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-11-17 16:05:21,808 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2023-11-17 16:05:21,808 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 207 flow [2023-11-17 16:05:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 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) [2023-11-17 16:05:21,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:21,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:05:21,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:21,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -646495021, now seen corresponding path program 2 times [2023-11-17 16:05:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193546372] [2023-11-17 16:05:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:21,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193546372] [2023-11-17 16:05:21,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193546372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:21,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:21,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:05:21,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509014236] [2023-11-17 16:05:21,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:21,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:21,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:21,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:05:21,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 480 [2023-11-17 16:05:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 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) [2023-11-17 16:05:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 480 [2023-11-17 16:05:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:27,304 INFO L124 PetriNetUnfolderBase]: 60801/81969 cut-off events. [2023-11-17 16:05:27,304 INFO L125 PetriNetUnfolderBase]: For 14782/14786 co-relation queries the response was YES. [2023-11-17 16:05:27,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176563 conditions, 81969 events. 60801/81969 cut-off events. For 14782/14786 co-relation queries the response was YES. Maximal size of possible extension queue 2637. Compared 514878 event pairs, 19827 based on Foata normal form. 1/61101 useless extension candidates. Maximal degree in co-relation 78842. Up to 42317 conditions per place. [2023-11-17 16:05:27,728 INFO L140 encePairwiseOnDemand]: 473/480 looper letters, 118 selfloop transitions, 11 changer transitions 1/152 dead transitions. [2023-11-17 16:05:27,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 152 transitions, 670 flow [2023-11-17 16:05:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1036 transitions. [2023-11-17 16:05:27,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2023-11-17 16:05:27,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1036 transitions. [2023-11-17 16:05:27,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1036 transitions. [2023-11-17 16:05:27,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:27,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1036 transitions. [2023-11-17 16:05:27,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 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) [2023-11-17 16:05:27,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 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) [2023-11-17 16:05:27,741 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 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) [2023-11-17 16:05:27,741 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 207 flow. Second operand 4 states and 1036 transitions. [2023-11-17 16:05:27,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 152 transitions, 670 flow [2023-11-17 16:05:27,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 152 transitions, 670 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:05:27,750 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 286 flow [2023-11-17 16:05:27,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-11-17 16:05:27,751 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-17 16:05:27,752 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 286 flow [2023-11-17 16:05:27,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 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) [2023-11-17 16:05:27,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:27,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:05:27,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:27,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash -180386838, now seen corresponding path program 1 times [2023-11-17 16:05:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:27,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591735422] [2023-11-17 16:05:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:27,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:27,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591735422] [2023-11-17 16:05:27,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591735422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:27,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:27,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:05:27,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987996073] [2023-11-17 16:05:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:05:27,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:27,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:05:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:05:28,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:05:28,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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) [2023-11-17 16:05:28,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:28,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:05:28,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:35,085 INFO L124 PetriNetUnfolderBase]: 75716/103070 cut-off events. [2023-11-17 16:05:35,086 INFO L125 PetriNetUnfolderBase]: For 43394/43402 co-relation queries the response was YES. [2023-11-17 16:05:35,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236088 conditions, 103070 events. 75716/103070 cut-off events. For 43394/43402 co-relation queries the response was YES. Maximal size of possible extension queue 3077. Compared 679780 event pairs, 44627 based on Foata normal form. 4/78016 useless extension candidates. Maximal degree in co-relation 93067. Up to 74804 conditions per place. [2023-11-17 16:05:35,595 INFO L140 encePairwiseOnDemand]: 474/480 looper letters, 126 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-17 16:05:35,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 153 transitions, 777 flow [2023-11-17 16:05:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:05:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:05:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1182 transitions. [2023-11-17 16:05:35,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925 [2023-11-17 16:05:35,599 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1182 transitions. [2023-11-17 16:05:35,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1182 transitions. [2023-11-17 16:05:35,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:35,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1182 transitions. [2023-11-17 16:05:35,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 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) [2023-11-17 16:05:35,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 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) [2023-11-17 16:05:35,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 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) [2023-11-17 16:05:35,609 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 286 flow. Second operand 5 states and 1182 transitions. [2023-11-17 16:05:35,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 153 transitions, 777 flow [2023-11-17 16:05:35,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 153 transitions, 773 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-17 16:05:35,666 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 332 flow [2023-11-17 16:05:35,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-11-17 16:05:35,667 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-11-17 16:05:35,667 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 332 flow [2023-11-17 16:05:35,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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) [2023-11-17 16:05:35,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:35,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:05:35,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:35,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1839308678, now seen corresponding path program 1 times [2023-11-17 16:05:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545360389] [2023-11-17 16:05:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545360389] [2023-11-17 16:05:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545360389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:35,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:05:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781201901] [2023-11-17 16:05:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:35,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:05:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:05:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:05:35,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:05:35,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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) [2023-11-17 16:05:35,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:35,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:05:35,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:41,938 INFO L124 PetriNetUnfolderBase]: 64670/87208 cut-off events. [2023-11-17 16:05:41,938 INFO L125 PetriNetUnfolderBase]: For 44699/44699 co-relation queries the response was YES. [2023-11-17 16:05:42,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208549 conditions, 87208 events. 64670/87208 cut-off events. For 44699/44699 co-relation queries the response was YES. Maximal size of possible extension queue 2763. Compared 551687 event pairs, 42135 based on Foata normal form. 0/74054 useless extension candidates. Maximal degree in co-relation 195687. Up to 74804 conditions per place. [2023-11-17 16:05:42,425 INFO L140 encePairwiseOnDemand]: 474/480 looper letters, 60 selfloop transitions, 2 changer transitions 54/138 dead transitions. [2023-11-17 16:05:42,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 701 flow [2023-11-17 16:05:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:05:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:05:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1173 transitions. [2023-11-17 16:05:42,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48875 [2023-11-17 16:05:42,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1173 transitions. [2023-11-17 16:05:42,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1173 transitions. [2023-11-17 16:05:42,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:42,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1173 transitions. [2023-11-17 16:05:42,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 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) [2023-11-17 16:05:42,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 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) [2023-11-17 16:05:42,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 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) [2023-11-17 16:05:42,437 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 332 flow. Second operand 5 states and 1173 transitions. [2023-11-17 16:05:42,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 701 flow [2023-11-17 16:05:42,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 697 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:42,461 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 310 flow [2023-11-17 16:05:42,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-11-17 16:05:42,462 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-11-17 16:05:42,463 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 310 flow [2023-11-17 16:05:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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) [2023-11-17 16:05:42,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:42,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:42,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:05:42,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:42,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1036615497, now seen corresponding path program 1 times [2023-11-17 16:05:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408395304] [2023-11-17 16:05:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:42,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408395304] [2023-11-17 16:05:42,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408395304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140593145] [2023-11-17 16:05:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:42,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:42,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:05:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:42,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:05:42,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:42,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140593145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:42,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:42,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:05:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594362281] [2023-11-17 16:05:42,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:42,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:05:42,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:05:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:05:42,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:05:42,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 310 flow. Second operand has 12 states, 12 states have (on average 218.08333333333334) internal successors, (2617), 12 states have internal predecessors, (2617), 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) [2023-11-17 16:05:42,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:42,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:05:42,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:50,564 INFO L124 PetriNetUnfolderBase]: 73096/99895 cut-off events. [2023-11-17 16:05:50,565 INFO L125 PetriNetUnfolderBase]: For 64813/64821 co-relation queries the response was YES. [2023-11-17 16:05:50,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246267 conditions, 99895 events. 73096/99895 cut-off events. For 64813/64821 co-relation queries the response was YES. Maximal size of possible extension queue 3021. Compared 660911 event pairs, 21735 based on Foata normal form. 4538/98699 useless extension candidates. Maximal degree in co-relation 246246. Up to 40006 conditions per place. [2023-11-17 16:05:51,141 INFO L140 encePairwiseOnDemand]: 472/480 looper letters, 165 selfloop transitions, 8 changer transitions 0/195 dead transitions. [2023-11-17 16:05:51,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 195 transitions, 1087 flow [2023-11-17 16:05:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:05:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:05:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1641 transitions. [2023-11-17 16:05:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48839285714285713 [2023-11-17 16:05:51,146 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1641 transitions. [2023-11-17 16:05:51,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1641 transitions. [2023-11-17 16:05:51,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:51,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1641 transitions. [2023-11-17 16:05:51,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.42857142857142) internal successors, (1641), 7 states have internal predecessors, (1641), 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) [2023-11-17 16:05:51,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:05:51,155 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:05:51,155 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 310 flow. Second operand 7 states and 1641 transitions. [2023-11-17 16:05:51,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 195 transitions, 1087 flow [2023-11-17 16:05:51,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 195 transitions, 1063 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:51,222 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 376 flow [2023-11-17 16:05:51,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-11-17 16:05:51,223 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2023-11-17 16:05:51,223 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 376 flow [2023-11-17 16:05:51,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 218.08333333333334) internal successors, (2617), 12 states have internal predecessors, (2617), 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) [2023-11-17 16:05:51,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:51,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:51,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 16:05:51,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:51,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:51,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:51,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1137022416, now seen corresponding path program 1 times [2023-11-17 16:05:51,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:51,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280964747] [2023-11-17 16:05:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:51,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280964747] [2023-11-17 16:05:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280964747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988221331] [2023-11-17 16:05:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:51,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:51,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:51,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:05:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:51,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:05:51,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:52,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:52,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988221331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:52,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:52,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:05:52,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411833018] [2023-11-17 16:05:52,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:05:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:05:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:05:52,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:05:52,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 218.08333333333334) internal successors, (2617), 12 states have internal predecessors, (2617), 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) [2023-11-17 16:05:52,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:52,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:05:52,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:58,441 INFO L124 PetriNetUnfolderBase]: 59390/81335 cut-off events. [2023-11-17 16:05:58,441 INFO L125 PetriNetUnfolderBase]: For 97448/97448 co-relation queries the response was YES. [2023-11-17 16:05:58,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226090 conditions, 81335 events. 59390/81335 cut-off events. For 97448/97448 co-relation queries the response was YES. Maximal size of possible extension queue 2693. Compared 522643 event pairs, 18469 based on Foata normal form. 3530/80327 useless extension candidates. Maximal degree in co-relation 212351. Up to 37714 conditions per place. [2023-11-17 16:05:58,897 INFO L140 encePairwiseOnDemand]: 472/480 looper letters, 103 selfloop transitions, 5 changer transitions 54/184 dead transitions. [2023-11-17 16:05:58,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 184 transitions, 1051 flow [2023-11-17 16:05:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:05:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:05:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1632 transitions. [2023-11-17 16:05:58,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-17 16:05:58,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1632 transitions. [2023-11-17 16:05:58,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1632 transitions. [2023-11-17 16:05:58,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:58,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1632 transitions. [2023-11-17 16:05:58,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.14285714285714) internal successors, (1632), 7 states have internal predecessors, (1632), 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) [2023-11-17 16:05:58,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:05:58,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:05:58,910 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 376 flow. Second operand 7 states and 1632 transitions. [2023-11-17 16:05:58,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 184 transitions, 1051 flow [2023-11-17 16:05:59,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 184 transitions, 1035 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 16:05:59,112 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 370 flow [2023-11-17 16:05:59,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2023-11-17 16:05:59,114 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2023-11-17 16:05:59,115 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 370 flow [2023-11-17 16:05:59,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 218.08333333333334) internal successors, (2617), 12 states have internal predecessors, (2617), 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) [2023-11-17 16:05:59,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:59,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:59,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 16:05:59,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:59,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1271549848, now seen corresponding path program 1 times [2023-11-17 16:05:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826078133] [2023-11-17 16:05:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:59,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:59,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826078133] [2023-11-17 16:05:59,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826078133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:59,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710792104] [2023-11-17 16:05:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:59,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:59,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:59,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:59,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:05:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:59,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:05:59,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:59,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710792104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:59,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:59,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:05:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815906952] [2023-11-17 16:05:59,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:05:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:05:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:05:59,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:05:59,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 370 flow. Second operand has 12 states, 12 states have (on average 220.16666666666666) internal successors, (2642), 12 states have internal predecessors, (2642), 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) [2023-11-17 16:05:59,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:59,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:05:59,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:04,838 INFO L124 PetriNetUnfolderBase]: 45392/60626 cut-off events. [2023-11-17 16:06:04,838 INFO L125 PetriNetUnfolderBase]: For 101950/102030 co-relation queries the response was YES. [2023-11-17 16:06:04,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192502 conditions, 60626 events. 45392/60626 cut-off events. For 101950/102030 co-relation queries the response was YES. Maximal size of possible extension queue 2035. Compared 356623 event pairs, 23564 based on Foata normal form. 1314/58843 useless extension candidates. Maximal degree in co-relation 192461. Up to 52527 conditions per place. [2023-11-17 16:06:05,203 INFO L140 encePairwiseOnDemand]: 472/480 looper letters, 91 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2023-11-17 16:06:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 709 flow [2023-11-17 16:06:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:06:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:06:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1575 transitions. [2023-11-17 16:06:05,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-11-17 16:06:05,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1575 transitions. [2023-11-17 16:06:05,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1575 transitions. [2023-11-17 16:06:05,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:05,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1575 transitions. [2023-11-17 16:06:05,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 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) [2023-11-17 16:06:05,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:06:05,215 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 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) [2023-11-17 16:06:05,215 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 370 flow. Second operand 7 states and 1575 transitions. [2023-11-17 16:06:05,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 709 flow [2023-11-17 16:06:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 667 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-17 16:06:05,277 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 378 flow [2023-11-17 16:06:05,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-11-17 16:06:05,277 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 17 predicate places. [2023-11-17 16:06:05,278 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 378 flow [2023-11-17 16:06:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 220.16666666666666) internal successors, (2642), 12 states have internal predecessors, (2642), 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) [2023-11-17 16:06:05,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:05,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:05,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:05,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:06:05,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1332322338, now seen corresponding path program 2 times [2023-11-17 16:06:05,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:05,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402516626] [2023-11-17 16:06:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402516626] [2023-11-17 16:06:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402516626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233430431] [2023-11-17 16:06:05,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:06:05,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:05,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:05,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:06:05,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:06:05,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:06:05,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:06:05,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:05,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233430431] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:06,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:06:06,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-17 16:06:06,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621893216] [2023-11-17 16:06:06,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:06,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:06,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:06,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:06:06,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 480 [2023-11-17 16:06:06,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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) [2023-11-17 16:06:06,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:06,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 480 [2023-11-17 16:06:06,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:09,784 INFO L124 PetriNetUnfolderBase]: 37133/49793 cut-off events. [2023-11-17 16:06:09,785 INFO L125 PetriNetUnfolderBase]: For 72331/72339 co-relation queries the response was YES. [2023-11-17 16:06:09,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154656 conditions, 49793 events. 37133/49793 cut-off events. For 72331/72339 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 286384 event pairs, 16635 based on Foata normal form. 732/48305 useless extension candidates. Maximal degree in co-relation 154616. Up to 42856 conditions per place. [2023-11-17 16:06:10,066 INFO L140 encePairwiseOnDemand]: 473/480 looper letters, 96 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2023-11-17 16:06:10,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 732 flow [2023-11-17 16:06:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1361 transitions. [2023-11-17 16:06:10,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47256944444444443 [2023-11-17 16:06:10,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1361 transitions. [2023-11-17 16:06:10,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1361 transitions. [2023-11-17 16:06:10,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:10,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1361 transitions. [2023-11-17 16:06:10,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 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) [2023-11-17 16:06:10,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 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) [2023-11-17 16:06:10,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 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) [2023-11-17 16:06:10,077 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 378 flow. Second operand 6 states and 1361 transitions. [2023-11-17 16:06:10,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 732 flow [2023-11-17 16:06:10,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 707 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:10,111 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 394 flow [2023-11-17 16:06:10,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2023-11-17 16:06:10,112 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2023-11-17 16:06:10,112 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 394 flow [2023-11-17 16:06:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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) [2023-11-17 16:06:10,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:10,113 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:10,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 16:06:10,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:10,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:06:10,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1025409744, now seen corresponding path program 1 times [2023-11-17 16:06:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332496357] [2023-11-17 16:06:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332496357] [2023-11-17 16:06:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332496357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846852935] [2023-11-17 16:06:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:11,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:11,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:11,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:06:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:11,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 16:06:11,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:11,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:06:11,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:06:12,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 16:06:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:12,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:12,121 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 (Array Int Int))) (= (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork2_~#t5~0.base| v_ArrVal_453) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) c_~s_2~0)) is different from false [2023-11-17 16:06:12,136 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork2_~#t5~0.base| v_ArrVal_453) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) is different from false [2023-11-17 16:06:14,202 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread4Thread1of1ForFork2_~#t5~0.base_106| Int)) (or (forall ((v_ArrVal_453 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |v_thread4Thread1of1ForFork2_~#t5~0.base_106| v_ArrVal_453) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) (< |v_thread4Thread1of1ForFork2_~#t5~0.base_106| (+ |c_#StackHeapBarrier| 1)))) is different from false [2023-11-17 16:06:14,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:06:14,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2023-11-17 16:06:14,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-17 16:06:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846852935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:14,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:14,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-11-17 16:06:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460113313] [2023-11-17 16:06:14,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:06:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:06:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=439, Unknown=6, NotChecked=132, Total=650 [2023-11-17 16:06:14,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 480 [2023-11-17 16:06:14,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 394 flow. Second operand has 26 states, 26 states have (on average 190.26923076923077) internal successors, (4947), 26 states have internal predecessors, (4947), 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) [2023-11-17 16:06:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:14,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 480 [2023-11-17 16:06:14,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand