/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_91-arrayloop2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:42:31,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:42:31,356 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 11:42:31,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:42:31,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:42:31,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:42:31,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:42:31,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:42:31,379 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:42:31,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:42:31,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:42:31,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:42:31,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:42:31,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:42:31,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:42:31,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:42:31,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:42:31,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:42:31,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:42:31,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:42:31,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:42:31,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:42:31,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:42:31,387 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:42:31,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:42:31,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:42:31,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:42:31,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:42:31,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:42:31,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:42:31,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:42:31,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:42:31,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:42:31,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:42:31,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:42:31,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:42:31,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:42:31,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:42:31,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-17 11:42:32,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:42:33,164 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:42:33,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-17 11:42:33,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1835fe/61f895f75dc6476ab04fec2f8b899645/FLAG8f32895f6 [2023-11-17 11:42:33,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1835fe/61f895f75dc6476ab04fec2f8b899645 [2023-11-17 11:42:33,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:42:33,206 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:42:33,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:42:33,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:42:33,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:42:33,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:33,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66589f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33, skipping insertion in model container [2023-11-17 11:42:33,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:33,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:42:33,678 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_91-arrayloop2_racefree.i[47038,47051] [2023-11-17 11:42:33,693 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,694 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,694 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,695 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:42:33,754 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:42:33,796 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_91-arrayloop2_racefree.i[47038,47051] [2023-11-17 11:42:33,804 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,804 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,805 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,806 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:42:33,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:42:33,894 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:42:33,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33 WrapperNode [2023-11-17 11:42:33,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:42:33,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:42:33,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:42:33,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:42:33,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:33,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:33,981 INFO L138 Inliner]: procedures = 278, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 199 [2023-11-17 11:42:33,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:42:33,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:42:33,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:42:33,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:42:33,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:33,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:42:34,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:42:34,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:42:34,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:42:34,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (1/1) ... [2023-11-17 11:42:34,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:42:34,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:34,074 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 11:42:34,089 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 11:42:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:42:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:42:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:42:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:42:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:42:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:42:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:42:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:42:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:42:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:42:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:42:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:42:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:42:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:42:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:42:34,113 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 11:42:34,251 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:42:34,253 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:42:34,589 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:42:34,869 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:42:34,870 INFO L307 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-17 11:42:34,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:42:34 BoogieIcfgContainer [2023-11-17 11:42:34,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:42:34,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:42:34,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:42:34,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:42:34,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:42:33" (1/3) ... [2023-11-17 11:42:34,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cd0265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:42:34, skipping insertion in model container [2023-11-17 11:42:34,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:42:33" (2/3) ... [2023-11-17 11:42:34,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cd0265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:42:34, skipping insertion in model container [2023-11-17 11:42:34,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:42:34" (3/3) ... [2023-11-17 11:42:34,881 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-11-17 11:42:34,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:42:34,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:42:34,896 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:42:34,949 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:42:34,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2023-11-17 11:42:35,030 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2023-11-17 11:42:35,030 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:42:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-11-17 11:42:35,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2023-11-17 11:42:35,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2023-11-17 11:42:35,044 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:42:35,057 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 58 transitions, 120 flow [2023-11-17 11:42:35,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 58 transitions, 120 flow [2023-11-17 11:42:35,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 58 transitions, 120 flow [2023-11-17 11:42:35,082 INFO L124 PetriNetUnfolderBase]: 16/62 cut-off events. [2023-11-17 11:42:35,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:35,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 16/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-11-17 11:42:35,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 552 [2023-11-17 11:42:47,407 INFO L134 LiptonReduction]: Checked pairs total: 884 [2023-11-17 11:42:47,407 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-11-17 11:42:47,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:42:47,429 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;@1b95a1e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:42:47,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:42:47,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:42:47,434 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-11-17 11:42:47,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:47,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:47,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-17 11:42:47,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:47,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 808774298, now seen corresponding path program 1 times [2023-11-17 11:42:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:47,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324870549] [2023-11-17 11:42:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:47,744 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 11:42:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324870549] [2023-11-17 11:42:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324870549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:42:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:42:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:42:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745204247] [2023-11-17 11:42:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:42:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:42:47,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:42:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:42:47,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:47,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 11:42:47,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:47,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:47,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:47,929 INFO L124 PetriNetUnfolderBase]: 39/92 cut-off events. [2023-11-17 11:42:47,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:47,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 92 events. 39/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 238 event pairs, 24 based on Foata normal form. 4/71 useless extension candidates. Maximal degree in co-relation 150. Up to 80 conditions per place. [2023-11-17 11:42:47,931 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 21 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-17 11:42:47,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 26 transitions, 102 flow [2023-11-17 11:42:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:42:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:42:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-17 11:42:47,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25412541254125415 [2023-11-17 11:42:47,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-17 11:42:47,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-17 11:42:47,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:47,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-17 11:42:47,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 11:42:47,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 11:42:47,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 11:42:47,954 INFO L175 Difference]: Start difference. First operand has 22 places, 31 transitions, 66 flow. Second operand 3 states and 77 transitions. [2023-11-17 11:42:47,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 26 transitions, 102 flow [2023-11-17 11:42:47,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:42:47,957 INFO L231 Difference]: Finished difference. Result has 24 places, 24 transitions, 62 flow [2023-11-17 11:42:47,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=24} [2023-11-17 11:42:47,962 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-17 11:42:47,962 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 62 flow [2023-11-17 11:42:47,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 11:42:47,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:47,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:42:47,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:47,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1066396633, now seen corresponding path program 1 times [2023-11-17 11:42:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:47,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341998744] [2023-11-17 11:42:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:48,094 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 11:42:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341998744] [2023-11-17 11:42:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341998744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:42:48,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:42:48,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:42:48,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466546531] [2023-11-17 11:42:48,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:42:48,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:42:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:42:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:42:48,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 11:42:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:48,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:48,272 INFO L124 PetriNetUnfolderBase]: 39/94 cut-off events. [2023-11-17 11:42:48,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:48,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 94 events. 39/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 24 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 172. Up to 83 conditions per place. [2023-11-17 11:42:48,274 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 11:42:48,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 108 flow [2023-11-17 11:42:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:42:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:42:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-17 11:42:48,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22112211221122113 [2023-11-17 11:42:48,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-17 11:42:48,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-17 11:42:48,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:48,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-17 11:42:48,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 11:42:48,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 11:42:48,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 11:42:48,279 INFO L175 Difference]: Start difference. First operand has 24 places, 24 transitions, 62 flow. Second operand 3 states and 67 transitions. [2023-11-17 11:42:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 108 flow [2023-11-17 11:42:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:48,281 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 74 flow [2023-11-17 11:42:48,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-11-17 11:42:48,282 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2023-11-17 11:42:48,282 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 74 flow [2023-11-17 11:42:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 11:42:48,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:48,283 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:48,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:42:48,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:48,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash -300661196, now seen corresponding path program 1 times [2023-11-17 11:42:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:48,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105594024] [2023-11-17 11:42:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:48,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:48,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934173809] [2023-11-17 11:42:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:48,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:48,325 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 11:42:48,334 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 11:42:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:48,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:42:48,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:48,529 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 11:42:48,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:48,548 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 11:42:48,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105594024] [2023-11-17 11:42:48,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934173809] [2023-11-17 11:42:48,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934173809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:48,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:48,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-17 11:42:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158032801] [2023-11-17 11:42:48,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:48,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:42:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:42:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:42:48,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:48,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 11:42:48,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:48,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:48,799 INFO L124 PetriNetUnfolderBase]: 39/100 cut-off events. [2023-11-17 11:42:48,799 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:42:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 100 events. 39/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 24 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 179. Up to 83 conditions per place. [2023-11-17 11:42:48,801 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-11-17 11:42:48,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 136 flow [2023-11-17 11:42:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:42:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:42:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2023-11-17 11:42:48,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19306930693069307 [2023-11-17 11:42:48,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 117 transitions. [2023-11-17 11:42:48,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 117 transitions. [2023-11-17 11:42:48,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:48,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 117 transitions. [2023-11-17 11:42:48,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 11:42:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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 11:42:48,807 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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 11:42:48,807 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 74 flow. Second operand 6 states and 117 transitions. [2023-11-17 11:42:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 136 flow [2023-11-17 11:42:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 132 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:48,809 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 112 flow [2023-11-17 11:42:48,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-17 11:42:48,810 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2023-11-17 11:42:48,810 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 112 flow [2023-11-17 11:42:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 11:42:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:48,811 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:48,824 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 11:42:49,018 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 11:42:49,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:49,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash 552775527, now seen corresponding path program 2 times [2023-11-17 11:42:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897173391] [2023-11-17 11:42:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:49,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:49,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897549956] [2023-11-17 11:42:49,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:42:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:49,135 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 11:42:49,145 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 11:42:49,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:42:49,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:49,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:42:49,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:49,436 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 11:42:49,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:49,496 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 11:42:49,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897173391] [2023-11-17 11:42:49,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897549956] [2023-11-17 11:42:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897549956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:49,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-17 11:42:49,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823268390] [2023-11-17 11:42:49,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:49,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:42:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:42:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:42:49,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:49,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 112 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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 11:42:49,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:49,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:49,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:49,942 INFO L124 PetriNetUnfolderBase]: 39/112 cut-off events. [2023-11-17 11:42:49,942 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-17 11:42:49,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 112 events. 39/112 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 299 event pairs, 24 based on Foata normal form. 12/102 useless extension candidates. Maximal degree in co-relation 175. Up to 83 conditions per place. [2023-11-17 11:42:49,944 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2023-11-17 11:42:49,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 210 flow [2023-11-17 11:42:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:42:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:42:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2023-11-17 11:42:49,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1782178217821782 [2023-11-17 11:42:49,947 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 216 transitions. [2023-11-17 11:42:49,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 216 transitions. [2023-11-17 11:42:49,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:49,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 216 transitions. [2023-11-17 11:42:49,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 18.0) internal successors, (216), 12 states have internal predecessors, (216), 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 11:42:49,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 101.0) internal successors, (1313), 13 states have internal predecessors, (1313), 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 11:42:49,952 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 101.0) internal successors, (1313), 13 states have internal predecessors, (1313), 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 11:42:49,952 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 112 flow. Second operand 12 states and 216 transitions. [2023-11-17 11:42:49,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 210 flow [2023-11-17 11:42:49,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 196 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:49,955 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 194 flow [2023-11-17 11:42:49,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-17 11:42:49,956 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 27 predicate places. [2023-11-17 11:42:49,956 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 194 flow [2023-11-17 11:42:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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 11:42:49,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:49,957 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:49,965 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 11:42:50,164 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 11:42:50,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:50,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash -709866425, now seen corresponding path program 3 times [2023-11-17 11:42:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474922482] [2023-11-17 11:42:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:50,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629025010] [2023-11-17 11:42:50,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:42:50,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:50,348 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 11:42:50,356 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 11:42:50,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:42:50,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:50,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:42:50,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:50,743 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 11:42:50,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:50,778 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 11:42:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474922482] [2023-11-17 11:42:50,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629025010] [2023-11-17 11:42:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629025010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:50,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:50,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-17 11:42:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660585872] [2023-11-17 11:42:50,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:50,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:42:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:42:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:42:50,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:50,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 11:42:50,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:50,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:50,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:50,997 INFO L124 PetriNetUnfolderBase]: 41/139 cut-off events. [2023-11-17 11:42:50,997 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-17 11:42:50,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 139 events. 41/139 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 240 event pairs, 24 based on Foata normal form. 3/120 useless extension candidates. Maximal degree in co-relation 310. Up to 77 conditions per place. [2023-11-17 11:42:50,999 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 64 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-11-17 11:42:50,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 683 flow [2023-11-17 11:42:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:42:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:42:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2023-11-17 11:42:51,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20297029702970298 [2023-11-17 11:42:51,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 123 transitions. [2023-11-17 11:42:51,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 123 transitions. [2023-11-17 11:42:51,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:51,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 123 transitions. [2023-11-17 11:42:51,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 11:42:51,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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 11:42:51,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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 11:42:51,004 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 194 flow. Second operand 6 states and 123 transitions. [2023-11-17 11:42:51,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 683 flow [2023-11-17 11:42:51,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 489 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-17 11:42:51,010 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 229 flow [2023-11-17 11:42:51,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-11-17 11:42:51,011 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2023-11-17 11:42:51,011 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 229 flow [2023-11-17 11:42:51,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 11:42:51,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:51,011 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:42:51,017 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 11:42:51,217 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 11:42:51,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:51,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:51,218 INFO L85 PathProgramCache]: Analyzing trace with hash -662516658, now seen corresponding path program 4 times [2023-11-17 11:42:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:51,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617380897] [2023-11-17 11:42:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:51,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947284587] [2023-11-17 11:42:51,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:42:51,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:51,759 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 11:42:51,763 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 11:42:53,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:42:53,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:42:53,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:42:53,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:42:53,360 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 11:42:53,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:42:53,576 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 11:42:53,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617380897] [2023-11-17 11:42:53,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:42:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947284587] [2023-11-17 11:42:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947284587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:42:53,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:42:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-17 11:42:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575502056] [2023-11-17 11:42:53,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:42:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 11:42:53,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 11:42:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:42:53,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:42:53,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 229 flow. Second operand has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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 11:42:53,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:53,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:42:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:42:54,448 INFO L124 PetriNetUnfolderBase]: 41/187 cut-off events. [2023-11-17 11:42:54,448 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-11-17 11:42:54,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 187 events. 41/187 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 240 event pairs, 24 based on Foata normal form. 48/213 useless extension candidates. Maximal degree in co-relation 423. Up to 89 conditions per place. [2023-11-17 11:42:54,450 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 22 selfloop transitions, 24 changer transitions 0/49 dead transitions. [2023-11-17 11:42:54,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 49 transitions, 393 flow [2023-11-17 11:42:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 11:42:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 11:42:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 414 transitions. [2023-11-17 11:42:54,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1707920792079208 [2023-11-17 11:42:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 414 transitions. [2023-11-17 11:42:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 414 transitions. [2023-11-17 11:42:54,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:42:54,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 414 transitions. [2023-11-17 11:42:54,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 17.25) internal successors, (414), 24 states have internal predecessors, (414), 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 11:42:54,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 101.0) internal successors, (2525), 25 states have internal predecessors, (2525), 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 11:42:54,461 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 101.0) internal successors, (2525), 25 states have internal predecessors, (2525), 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 11:42:54,461 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 229 flow. Second operand 24 states and 414 transitions. [2023-11-17 11:42:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 49 transitions, 393 flow [2023-11-17 11:42:54,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 49 transitions, 385 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 11:42:54,466 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 463 flow [2023-11-17 11:42:54,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=463, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2023-11-17 11:42:54,467 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 65 predicate places. [2023-11-17 11:42:54,467 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 463 flow [2023-11-17 11:42:54,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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 11:42:54,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:54,468 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:42:54,493 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 11:42:54,686 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 11:42:54,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:42:54,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 119287374, now seen corresponding path program 5 times [2023-11-17 11:42:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135993259] [2023-11-17 11:42:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:55,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:42:55,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027517484] [2023-11-17 11:42:55,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:42:55,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:42:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:42:55,768 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 11:42:55,785 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 11:52:14,316 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 11:52:14,316 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 11:52:15,367 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 11:52:15,517 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 11:52:15,546 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 11:52:15,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-11-17 11:52:15,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-17 11:52:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:52:15,549 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 11:52:15,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:52:15,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-17 11:52:15,550 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-11-17 11:52:15,555 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:52:15,555 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:52:15,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:52:15 BasicIcfg [2023-11-17 11:52:15,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:52:15,558 INFO L158 Benchmark]: Toolchain (without parser) took 582352.06ms. Allocated memory was 294.6MB in the beginning and 425.7MB in the end (delta: 131.1MB). Free memory was 242.3MB in the beginning and 174.8MB in the end (delta: 67.5MB). Peak memory consumption was 199.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,558 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:52:15,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.75ms. Allocated memory is still 294.6MB. Free memory was 242.3MB in the beginning and 211.4MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.80ms. Allocated memory is still 294.6MB. Free memory was 211.4MB in the beginning and 208.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,559 INFO L158 Benchmark]: Boogie Preprocessor took 62.40ms. Allocated memory is still 294.6MB. Free memory was 208.2MB in the beginning and 206.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,561 INFO L158 Benchmark]: RCFGBuilder took 826.13ms. Allocated memory is still 294.6MB. Free memory was 206.1MB in the beginning and 149.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,561 INFO L158 Benchmark]: TraceAbstraction took 580684.11ms. Allocated memory was 294.6MB in the beginning and 425.7MB in the end (delta: 131.1MB). Free memory was 149.0MB in the beginning and 174.8MB in the end (delta: -25.8MB). Peak memory consumption was 105.8MB. Max. memory is 8.0GB. [2023-11-17 11:52:15,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 689.75ms. Allocated memory is still 294.6MB. Free memory was 242.3MB in the beginning and 211.4MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 83.80ms. Allocated memory is still 294.6MB. Free memory was 211.4MB in the beginning and 208.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.40ms. Allocated memory is still 294.6MB. Free memory was 208.2MB in the beginning and 206.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 826.13ms. Allocated memory is still 294.6MB. Free memory was 206.1MB in the beginning and 149.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 580684.11ms. Allocated memory was 294.6MB in the beginning and 425.7MB in the end (delta: 131.1MB). Free memory was 149.0MB in the beginning and 174.8MB in the end (delta: -25.8MB). Peak memory consumption was 105.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.3s, 45 PlacesBefore, 22 PlacesAfterwards, 58 TransitionsBefore, 31 TransitionsAfterwards, 552 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 41 TotalNumberOfCompositions, 884 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 594, independent: 569, independent conditional: 0, independent unconditional: 569, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 262, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 262, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10816, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 10796, unknown conditional: 0, unknown unconditional: 10796] ], Cache Queries: [ total: 594, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 266, unknown conditional: 0, unknown unconditional: 266] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1061]: 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 3 procedures, 77 locations, 3 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: 580.6s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 434 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=463occurred 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, 0.8s 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