/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:42:26,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:42:26,816 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 11:42:26,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:42:26,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:42:26,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:42:26,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:42:26,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:42:26,867 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:42:26,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:42:26,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:42:26,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:42:26,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:42:26,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:42:26,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:42:26,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:42:26,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:42:26,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:42:26,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:42:26,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:42:26,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:42:26,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:42:26,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:42:26,878 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:42:26,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:42:26,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:42:26,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:42:26,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:42:26,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:42:26,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:42:26,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:42:26,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:42:26,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:42:27,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:42:27,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:42:27,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:42:27,194 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:42:27,195 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:42:27,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-17 11:42:28,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:42:28,703 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:42:28,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-17 11:42:28,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b08bfc13/22b8c88f8df64e97ae24dbb2c0576da4/FLAG6959aadd3 [2023-11-17 11:42:28,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b08bfc13/22b8c88f8df64e97ae24dbb2c0576da4 [2023-11-17 11:42:28,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:42:28,753 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:42:28,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:42:28,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:42:28,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:42:28,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:42:28" (1/1) ... [2023-11-17 11:42:28,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5729af01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:28, skipping insertion in model container [2023-11-17 11:42:28,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:42:28" (1/1) ... [2023-11-17 11:42:28,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:42:29,256 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-17 11:42:29,273 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,274 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,274 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,275 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:42:29,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:42:29,391 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-17 11:42:29,394 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,394 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,395 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,395 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:29,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:42:29,531 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:42:29,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29 WrapperNode [2023-11-17 11:42:29,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:42:29,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:42:29,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:42:29,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:42:29,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,588 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 333 [2023-11-17 11:42:29,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:42:29,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:42:29,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:42:29,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:42:29,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:42:29,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:42:29,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:42:29,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:42:29,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (1/1) ... [2023-11-17 11:42:29,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:42:29,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:29,682 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 11:42:29,693 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 11:42:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:42:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:42:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 11:42:29,715 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 11:42:29,716 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:42:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:42:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:42:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:42:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:42:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:42:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:42:29,719 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 11:42:29,857 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:42:29,859 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:42:30,310 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:42:30,644 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:42:30,644 INFO L307 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-17 11:42:30,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:42:30 BoogieIcfgContainer [2023-11-17 11:42:30,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:42:30,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:42:30,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:42:30,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:42:30,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:42:28" (1/3) ... [2023-11-17 11:42:30,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be51e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:42:30, skipping insertion in model container [2023-11-17 11:42:30,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:29" (2/3) ... [2023-11-17 11:42:30,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be51e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:42:30, skipping insertion in model container [2023-11-17 11:42:30,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:42:30" (3/3) ... [2023-11-17 11:42:30,660 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-17 11:42:30,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:42:30,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:42:30,679 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:42:30,756 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:42:30,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,877 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2023-11-17 11:42:30,877 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:42:30,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 52/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 807 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2023-11-17 11:42:30,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,897 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:42:30,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2023-11-17 11:42:30,977 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2023-11-17 11:42:30,978 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:42:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 52/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 807 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2023-11-17 11:42:30,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 6900 [2023-11-17 11:42:32,211 INFO L134 LiptonReduction]: Checked pairs total: 17187 [2023-11-17 11:42:32,211 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-11-17 11:42:32,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:42:32,240 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;@2de5bb8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:42:32,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:42:32,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:42:32,247 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2023-11-17 11:42:32,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:32,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:32,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-17 11:42:32,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:32,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -22250490, now seen corresponding path program 1 times [2023-11-17 11:42:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:32,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723998733] [2023-11-17 11:42:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:32,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:32,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723998733] [2023-11-17 11:42:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723998733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:42:32,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:42:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:42:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698571126] [2023-11-17 11:42:32,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:42:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:42:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:42:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:42:32,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:32,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 90 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 11:42:32,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:32,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:32,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:33,647 INFO L124 PetriNetUnfolderBase]: 5623/8672 cut-off events. [2023-11-17 11:42:33,648 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-17 11:42:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16972 conditions, 8672 events. 5623/8672 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 48536 event pairs, 4656 based on Foata normal form. 604/7282 useless extension candidates. Maximal degree in co-relation 16072. Up to 8182 conditions per place. [2023-11-17 11:42:33,707 INFO L140 encePairwiseOnDemand]: 151/176 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-17 11:42:33,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 288 flow [2023-11-17 11:42:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:42:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:42:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-11-17 11:42:33,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:42:33,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-11-17 11:42:33,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-11-17 11:42:33,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:33,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-11-17 11:42:33,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 11:42:33,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 11:42:33,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 11:42:33,731 INFO L175 Difference]: Start difference. First operand has 61 places, 90 transitions, 200 flow. Second operand 3 states and 176 transitions. [2023-11-17 11:42:33,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 288 flow [2023-11-17 11:42:33,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:42:33,738 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 168 flow [2023-11-17 11:42:33,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-17 11:42:33,743 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-11-17 11:42:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 168 flow [2023-11-17 11:42:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 11:42:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:33,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:42:33,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:33,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604380, now seen corresponding path program 1 times [2023-11-17 11:42:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603657912] [2023-11-17 11:42:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:33,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603657912] [2023-11-17 11:42:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603657912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:42:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:42:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:42:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478354011] [2023-11-17 11:42:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:42:33,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:42:33,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:42:33,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:42:33,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:33,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 11:42:33,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:33,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:33,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:34,829 INFO L124 PetriNetUnfolderBase]: 5623/8674 cut-off events. [2023-11-17 11:42:34,830 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-17 11:42:34,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16983 conditions, 8674 events. 5623/8674 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 48529 event pairs, 4656 based on Foata normal form. 2/6685 useless extension candidates. Maximal degree in co-relation 16964. Up to 8185 conditions per place. [2023-11-17 11:42:34,892 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 60 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-17 11:42:34,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 294 flow [2023-11-17 11:42:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:42:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:42:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-17 11:42:34,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2023-11-17 11:42:34,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-17 11:42:34,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-17 11:42:34,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:34,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-17 11:42:34,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 11:42:34,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 11:42:34,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 11:42:34,902 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 168 flow. Second operand 3 states and 152 transitions. [2023-11-17 11:42:34,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 294 flow [2023-11-17 11:42:34,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:34,905 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 180 flow [2023-11-17 11:42:34,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2023-11-17 11:42:34,907 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2023-11-17 11:42:34,907 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 180 flow [2023-11-17 11:42:34,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 11:42:34,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:34,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:34,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:42:34,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:34,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1133511027, now seen corresponding path program 1 times [2023-11-17 11:42:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254930787] [2023-11-17 11:42:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:34,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:34,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284936664] [2023-11-17 11:42:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:34,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:34,962 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 11:42:35,032 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 11:42:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:35,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:42:35,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:35,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254930787] [2023-11-17 11:42:35,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284936664] [2023-11-17 11:42:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284936664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:35,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:35,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-17 11:42:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997381825] [2023-11-17 11:42:35,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:42:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:42:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:42:35,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:35,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 11:42:35,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:35,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:35,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:36,352 INFO L124 PetriNetUnfolderBase]: 5623/8680 cut-off events. [2023-11-17 11:42:36,352 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-11-17 11:42:36,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17011 conditions, 8680 events. 5623/8680 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 48592 event pairs, 4656 based on Foata normal form. 6/6695 useless extension candidates. Maximal degree in co-relation 16971. Up to 8185 conditions per place. [2023-11-17 11:42:36,415 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 60 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-17 11:42:36,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 322 flow [2023-11-17 11:42:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:42:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:42:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2023-11-17 11:42:36,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23390151515151514 [2023-11-17 11:42:36,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 247 transitions. [2023-11-17 11:42:36,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 247 transitions. [2023-11-17 11:42:36,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:36,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 247 transitions. [2023-11-17 11:42:36,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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 11:42:36,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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 11:42:36,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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 11:42:36,422 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 180 flow. Second operand 6 states and 247 transitions. [2023-11-17 11:42:36,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 322 flow [2023-11-17 11:42:36,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 318 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:36,425 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 218 flow [2023-11-17 11:42:36,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-11-17 11:42:36,426 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2023-11-17 11:42:36,426 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 218 flow [2023-11-17 11:42:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 11:42:36,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:36,427 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:36,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 11:42:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:36,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:36,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash 566727388, now seen corresponding path program 2 times [2023-11-17 11:42:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998120957] [2023-11-17 11:42:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:36,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981706887] [2023-11-17 11:42:36,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:42:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:36,758 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 11:42:36,783 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 11:42:37,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:42:37,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:37,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:42:37,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:37,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:42:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998120957] [2023-11-17 11:42:37,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:37,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981706887] [2023-11-17 11:42:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981706887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:37,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-17 11:42:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286300598] [2023-11-17 11:42:37,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:37,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:42:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:42:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:42:37,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:37,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 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 11:42:37,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:37,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:37,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:38,690 INFO L124 PetriNetUnfolderBase]: 5623/8692 cut-off events. [2023-11-17 11:42:38,691 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-17 11:42:38,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17082 conditions, 8692 events. 5623/8692 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 48651 event pairs, 4656 based on Foata normal form. 12/6713 useless extension candidates. Maximal degree in co-relation 16967. Up to 8185 conditions per place. [2023-11-17 11:42:38,762 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 60 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-11-17 11:42:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 396 flow [2023-11-17 11:42:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:42:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:42:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 436 transitions. [2023-11-17 11:42:38,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20643939393939395 [2023-11-17 11:42:38,765 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 436 transitions. [2023-11-17 11:42:38,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 436 transitions. [2023-11-17 11:42:38,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:38,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 436 transitions. [2023-11-17 11:42:38,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.333333333333336) internal successors, (436), 12 states have internal predecessors, (436), 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 11:42:38,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 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 11:42:38,774 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 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 11:42:38,776 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 218 flow. Second operand 12 states and 436 transitions. [2023-11-17 11:42:38,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 396 flow [2023-11-17 11:42:38,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 382 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:38,788 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 300 flow [2023-11-17 11:42:38,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=300, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2023-11-17 11:42:38,790 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2023-11-17 11:42:38,791 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 300 flow [2023-11-17 11:42:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 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 11:42:38,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:38,791 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:38,802 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 11:42:39,002 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,SelfDestructingSolverStorable3 [2023-11-17 11:42:39,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:39,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash -113296516, now seen corresponding path program 3 times [2023-11-17 11:42:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308981789] [2023-11-17 11:42:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:39,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43344550] [2023-11-17 11:42:39,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:42:39,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:39,228 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 11:42:39,235 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 11:42:39,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:42:39,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:39,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:42:39,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 11:42:39,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 11:42:39,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308981789] [2023-11-17 11:42:39,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43344550] [2023-11-17 11:42:39,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43344550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:39,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:39,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-17 11:42:39,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628601488] [2023-11-17 11:42:39,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:42:39,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:39,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:42:39,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:42:39,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:39,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 11:42:39,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:39,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:41,076 INFO L124 PetriNetUnfolderBase]: 5633/8757 cut-off events. [2023-11-17 11:42:41,076 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2023-11-17 11:42:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 8757 events. 5633/8757 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 48826 event pairs, 4656 based on Foata normal form. 3/6785 useless extension candidates. Maximal degree in co-relation 17006. Up to 8179 conditions per place. [2023-11-17 11:42:41,160 INFO L140 encePairwiseOnDemand]: 172/176 looper letters, 104 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-11-17 11:42:41,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 869 flow [2023-11-17 11:42:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:42:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:42:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2023-11-17 11:42:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23958333333333334 [2023-11-17 11:42:41,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 253 transitions. [2023-11-17 11:42:41,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 253 transitions. [2023-11-17 11:42:41,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:41,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 253 transitions. [2023-11-17 11:42:41,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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 11:42:41,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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 11:42:41,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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 11:42:41,166 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 300 flow. Second operand 6 states and 253 transitions. [2023-11-17 11:42:41,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 869 flow [2023-11-17 11:42:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 675 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-17 11:42:41,171 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 335 flow [2023-11-17 11:42:41,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-11-17 11:42:41,172 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2023-11-17 11:42:41,173 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 335 flow [2023-11-17 11:42:41,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 11:42:41,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:41,173 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:42:41,183 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 11:42:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:41,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:41,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 387216350, now seen corresponding path program 4 times [2023-11-17 11:42:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230134423] [2023-11-17 11:42:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:41,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:42,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685249106] [2023-11-17 11:42:42,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:42:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:42,045 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 11:42:42,053 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 11:42:43,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:42:43,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:43,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:42:43,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-17 11:42:43,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-17 11:42:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230134423] [2023-11-17 11:42:43,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685249106] [2023-11-17 11:42:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685249106] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:43,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:43,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-17 11:42:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098989747] [2023-11-17 11:42:43,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:43,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 11:42:43,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 11:42:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:42:43,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 176 [2023-11-17 11:42:43,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 335 flow. Second operand has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 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 11:42:43,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:43,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 176 [2023-11-17 11:42:43,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:45,731 INFO L124 PetriNetUnfolderBase]: 5633/8805 cut-off events. [2023-11-17 11:42:45,732 INFO L125 PetriNetUnfolderBase]: For 3695/3695 co-relation queries the response was YES. [2023-11-17 11:42:45,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17429 conditions, 8805 events. 5633/8805 cut-off events. For 3695/3695 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 48827 event pairs, 4656 based on Foata normal form. 48/6878 useless extension candidates. Maximal degree in co-relation 17011. Up to 8191 conditions per place. [2023-11-17 11:42:45,788 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 62 selfloop transitions, 24 changer transitions 0/94 dead transitions. [2023-11-17 11:42:45,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 579 flow [2023-11-17 11:42:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 11:42:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 11:42:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 814 transitions. [2023-11-17 11:42:45,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19270833333333334 [2023-11-17 11:42:45,795 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 814 transitions. [2023-11-17 11:42:45,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 814 transitions. [2023-11-17 11:42:45,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:45,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 814 transitions. [2023-11-17 11:42:45,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 33.916666666666664) internal successors, (814), 24 states have internal predecessors, (814), 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 11:42:45,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 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 11:42:45,810 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 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 11:42:45,810 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 335 flow. Second operand 24 states and 814 transitions. [2023-11-17 11:42:45,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 579 flow [2023-11-17 11:42:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 94 transitions, 571 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:45,818 INFO L231 Difference]: Finished difference. Result has 127 places, 94 transitions, 569 flow [2023-11-17 11:42:45,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=569, PETRI_PLACES=127, PETRI_TRANSITIONS=94} [2023-11-17 11:42:45,820 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2023-11-17 11:42:45,821 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 94 transitions, 569 flow [2023-11-17 11:42:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 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 11:42:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:42:45,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:42:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:46,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:46,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 943821534, now seen corresponding path program 5 times [2023-11-17 11:42:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423215624] [2023-11-17 11:42:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:47,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717602620] [2023-11-17 11:42:47,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:42:47,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:47,209 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 11:42:47,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-11-17 11:52:01,646 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:52:01,646 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:52:02,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:02,847 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-11-17 11:52:02,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-11-17 11:52:02,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-11-17 11:52:02,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-17 11:52:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:52:02,875 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-11-17 11:52:02,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:52:02,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:52:02,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 11:52:02,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:52:02,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:52:02,877 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-11-17 11:52:02,881 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:52:02,881 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:52:02,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:52:02 BasicIcfg [2023-11-17 11:52:02,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:52:02,884 INFO L158 Benchmark]: Toolchain (without parser) took 574130.52ms. Allocated memory was 189.8MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 128.9MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 630.4MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,884 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:52:02,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.97ms. Allocated memory was 189.8MB in the beginning and 298.8MB in the end (delta: 109.1MB). Free memory was 128.7MB in the beginning and 255.1MB in the end (delta: -126.5MB). Peak memory consumption was 31.6MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.51ms. Allocated memory is still 298.8MB. Free memory was 255.1MB in the beginning and 251.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,887 INFO L158 Benchmark]: Boogie Preprocessor took 62.36ms. Allocated memory is still 298.8MB. Free memory was 251.5MB in the beginning and 248.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,888 INFO L158 Benchmark]: RCFGBuilder took 993.78ms. Allocated memory is still 298.8MB. Free memory was 248.3MB in the beginning and 172.3MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,888 INFO L158 Benchmark]: TraceAbstraction took 572233.50ms. Allocated memory was 298.8MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 171.8MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 562.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:02,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 777.97ms. Allocated memory was 189.8MB in the beginning and 298.8MB in the end (delta: 109.1MB). Free memory was 128.7MB in the beginning and 255.1MB in the end (delta: -126.5MB). Peak memory consumption was 31.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.51ms. Allocated memory is still 298.8MB. Free memory was 255.1MB in the beginning and 251.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.36ms. Allocated memory is still 298.8MB. Free memory was 251.5MB in the beginning and 248.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 993.78ms. Allocated memory is still 298.8MB. Free memory was 248.3MB in the beginning and 172.3MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. * TraceAbstraction took 572233.50ms. Allocated memory was 298.8MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 171.8MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 562.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 88 PlacesBefore, 61 PlacesAfterwards, 117 TransitionsBefore, 90 TransitionsAfterwards, 6900 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 17187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9144, independent: 8944, independent conditional: 0, independent unconditional: 8944, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3841, independent: 3764, independent conditional: 0, independent unconditional: 3764, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3841, independent: 3577, independent conditional: 0, independent unconditional: 3577, dependent: 264, dependent conditional: 0, dependent unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 264, independent: 187, independent conditional: 0, independent unconditional: 187, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 351, independent: 161, independent conditional: 0, independent unconditional: 161, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9144, independent: 5180, independent conditional: 0, independent unconditional: 5180, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 3841, unknown conditional: 0, unknown unconditional: 3841] , Statistics on independence cache: Total cache size (in pairs): 1005, Positive cache size: 968, Positive conditional cache size: 0, Positive unconditional cache size: 968, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 572.1s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1390 IncrementalHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 1390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4471 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown