/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_93-evilcollapse_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:42:59,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:42:59,784 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 11:42:59,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:42:59,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:42:59,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:42:59,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:42:59,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:42:59,826 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:42:59,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:42:59,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:42:59,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:42:59,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:42:59,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:42:59,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:42:59,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:42:59,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:42:59,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:42:59,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:42:59,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:42:59,832 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:42:59,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:42:59,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:42:59,833 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:42:59,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:42:59,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:42:59,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:42:59,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:42:59,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:42:59,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:42:59,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:42:59,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:42:59,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:43:00,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:43:00,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:43:00,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:43:00,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:43:00,083 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:43:00,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-17 11:43:01,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:43:01,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:43:01,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-17 11:43:01,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7d7b0bf/8a1aa089a6c442b592272c0a6f87b9fa/FLAGb43d53e91 [2023-11-17 11:43:01,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7d7b0bf/8a1aa089a6c442b592272c0a6f87b9fa [2023-11-17 11:43:01,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:43:01,603 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:43:01,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:01,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:43:01,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:43:01,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:01" (1/1) ... [2023-11-17 11:43:01,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7001bd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:01, skipping insertion in model container [2023-11-17 11:43:01,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:01" (1/1) ... [2023-11-17 11:43:01,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:43:01,961 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_93-evilcollapse_racefree.i[47038,47051] [2023-11-17 11:43:01,976 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:01,976 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:01,977 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:01,979 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:02,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:02,019 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:43:02,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-11-17 11:43:02,050 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:02,050 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:02,050 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:02,051 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 11:43:02,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:02,106 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:43:02,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02 WrapperNode [2023-11-17 11:43:02,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:02,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:02,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:43:02,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:43:02,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,162 INFO L138 Inliner]: procedures = 280, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 243 [2023-11-17 11:43:02,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:02,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:43:02,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:43:02,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:43:02,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:43:02,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:43:02,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:43:02,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:43:02,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (1/1) ... [2023-11-17 11:43:02,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:43:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:02,260 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 11:43:02,262 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 11:43:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:43:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:43:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:43:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:43:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:43:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:43:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:43:02,306 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 11:43:02,434 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:43:02,435 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:43:02,725 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:43:03,004 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:43:03,004 INFO L307 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-17 11:43:03,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:03 BoogieIcfgContainer [2023-11-17 11:43:03,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:43:03,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:43:03,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:43:03,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:43:03,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:43:01" (1/3) ... [2023-11-17 11:43:03,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ed0ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:03, skipping insertion in model container [2023-11-17 11:43:03,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:02" (2/3) ... [2023-11-17 11:43:03,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ed0ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:03, skipping insertion in model container [2023-11-17 11:43:03,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:03" (3/3) ... [2023-11-17 11:43:03,014 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-11-17 11:43:03,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:43:03,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:43:03,031 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:43:03,074 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:43:03,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2023-11-17 11:43:03,163 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2023-11-17 11:43:03,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:43:03,170 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 116 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 11:43:03,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2023-11-17 11:43:03,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2023-11-17 11:43:03,179 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:43:03,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 58 transitions, 120 flow [2023-11-17 11:43:03,198 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 58 transitions, 120 flow [2023-11-17 11:43:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 58 transitions, 120 flow [2023-11-17 11:43:03,219 INFO L124 PetriNetUnfolderBase]: 16/62 cut-off events. [2023-11-17 11:43:03,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:03,220 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 105 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 11:43:03,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 552 [2023-11-17 11:43:17,565 INFO L134 LiptonReduction]: Checked pairs total: 901 [2023-11-17 11:43:17,565 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-11-17 11:43:17,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:43:17,600 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;@7ed1c329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:43:17,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:43:17,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:43:17,606 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-11-17 11:43:17,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:17,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:17,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-17 11:43:17,607 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 11:43:17,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1285182039, now seen corresponding path program 1 times [2023-11-17 11:43:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:17,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25101733] [2023-11-17 11:43:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:17,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:17,899 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 11:43:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25101733] [2023-11-17 11:43:17,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25101733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:17,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:17,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:43:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986727640] [2023-11-17 11:43:17,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:43:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:43:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:43:17,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:17,934 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 11:43:17,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:17,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:18,112 INFO L124 PetriNetUnfolderBase]: 39/92 cut-off events. [2023-11-17 11:43:18,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:18,113 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 243 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 11:43:18,114 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 21 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-17 11:43:18,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 26 transitions, 102 flow [2023-11-17 11:43:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:43:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:43:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-17 11:43:18,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25412541254125415 [2023-11-17 11:43:18,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-17 11:43:18,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-17 11:43:18,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:18,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-17 11:43:18,157 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 11:43:18,161 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 11:43:18,162 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 11:43:18,163 INFO L175 Difference]: Start difference. First operand has 22 places, 31 transitions, 66 flow. Second operand 3 states and 77 transitions. [2023-11-17 11:43:18,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 26 transitions, 102 flow [2023-11-17 11:43:18,165 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 11:43:18,178 INFO L231 Difference]: Finished difference. Result has 24 places, 24 transitions, 62 flow [2023-11-17 11:43:18,180 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 11:43:18,183 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-17 11:43:18,183 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 62 flow [2023-11-17 11:43:18,184 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 11:43:18,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:18,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:18,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:43:18,185 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 11:43:18,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -258319324, now seen corresponding path program 1 times [2023-11-17 11:43:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761174161] [2023-11-17 11:43:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:18,259 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 11:43:18,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761174161] [2023-11-17 11:43:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761174161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:18,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:18,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:43:18,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509374431] [2023-11-17 11:43:18,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:18,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:43:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:43:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:43:18,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:18,262 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 11:43:18,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:18,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:18,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:18,394 INFO L124 PetriNetUnfolderBase]: 39/94 cut-off events. [2023-11-17 11:43:18,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:18,409 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 246 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 11:43:18,411 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 11:43:18,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 108 flow [2023-11-17 11:43:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:43:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:43:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-17 11:43:18,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22112211221122113 [2023-11-17 11:43:18,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-17 11:43:18,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-17 11:43:18,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:18,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-17 11:43:18,414 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 11:43:18,414 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 11:43:18,415 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 11:43:18,415 INFO L175 Difference]: Start difference. First operand has 24 places, 24 transitions, 62 flow. Second operand 3 states and 67 transitions. [2023-11-17 11:43:18,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 108 flow [2023-11-17 11:43:18,415 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 11:43:18,416 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 74 flow [2023-11-17 11:43:18,416 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 11:43:18,416 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2023-11-17 11:43:18,417 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 74 flow [2023-11-17 11:43:18,417 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 11:43:18,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:18,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:43:18,417 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 11:43:18,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash -533945611, now seen corresponding path program 1 times [2023-11-17 11:43:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571334612] [2023-11-17 11:43:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:18,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:18,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:43:18,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364631061] [2023-11-17 11:43:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:43:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:18,472 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 11:43:18,518 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 11:43:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:18,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:43:18,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:43:18,669 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 11:43:18,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:43:18,684 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 11:43:18,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571334612] [2023-11-17 11:43:18,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:43:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364631061] [2023-11-17 11:43:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364631061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:43:18,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:43:18,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-17 11:43:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282805169] [2023-11-17 11:43:18,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:43:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:43:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:43:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:43:18,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:18,688 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 11:43:18,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:18,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:18,846 INFO L124 PetriNetUnfolderBase]: 39/100 cut-off events. [2023-11-17 11:43:18,846 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:43:18,847 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 252 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 11:43:18,848 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-11-17 11:43:18,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 136 flow [2023-11-17 11:43:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:43:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:43:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2023-11-17 11:43:18,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19306930693069307 [2023-11-17 11:43:18,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 117 transitions. [2023-11-17 11:43:18,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 117 transitions. [2023-11-17 11:43:18,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:18,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 117 transitions. [2023-11-17 11:43:18,854 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 11:43:18,855 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 11:43:18,855 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 11:43:18,855 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 74 flow. Second operand 6 states and 117 transitions. [2023-11-17 11:43:18,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 136 flow [2023-11-17 11:43:18,856 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 11:43:18,857 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 112 flow [2023-11-17 11:43:18,857 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 11:43:18,858 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2023-11-17 11:43:18,858 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 112 flow [2023-11-17 11:43:18,858 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 11:43:18,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:18,858 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:18,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 11:43:19,064 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 11:43:19,066 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 11:43:19,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1717438564, now seen corresponding path program 2 times [2023-11-17 11:43:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955768205] [2023-11-17 11:43:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:19,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:43:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498629486] [2023-11-17 11:43:19,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:43:19,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:43:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:19,151 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 11:43:19,167 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 11:43:19,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:43:19,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:43:19,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:43:19,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:43:19,402 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 11:43:19,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:43:19,444 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 11:43:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:19,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955768205] [2023-11-17 11:43:19,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:43:19,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498629486] [2023-11-17 11:43:19,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498629486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:43:19,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:43:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-17 11:43:19,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393005385] [2023-11-17 11:43:19,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:43:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:43:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:43:19,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:43:19,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:19,447 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 11:43:19,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:19,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:19,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:19,729 INFO L124 PetriNetUnfolderBase]: 39/112 cut-off events. [2023-11-17 11:43:19,730 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-17 11:43:19,730 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 298 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 11:43:19,731 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 20 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2023-11-17 11:43:19,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 210 flow [2023-11-17 11:43:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:43:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:43:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2023-11-17 11:43:19,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1782178217821782 [2023-11-17 11:43:19,732 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 216 transitions. [2023-11-17 11:43:19,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 216 transitions. [2023-11-17 11:43:19,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:19,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 216 transitions. [2023-11-17 11:43:19,733 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 11:43:19,736 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 11:43:19,737 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 11:43:19,737 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 112 flow. Second operand 12 states and 216 transitions. [2023-11-17 11:43:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 210 flow [2023-11-17 11:43:19,742 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 11:43:19,743 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 194 flow [2023-11-17 11:43:19,747 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 11:43:19,748 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 27 predicate places. [2023-11-17 11:43:19,748 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 194 flow [2023-11-17 11:43:19,749 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 11:43:19,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:19,749 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:19,770 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 11:43:19,969 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 11:43:19,969 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 11:43:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1219604796, now seen corresponding path program 3 times [2023-11-17 11:43:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:19,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73981850] [2023-11-17 11:43:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:20,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:43:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016279047] [2023-11-17 11:43:20,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:43:20,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:43:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:20,078 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 11:43:20,104 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 11:43:20,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:43:20,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:43:20,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:43:20,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:43:20,369 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 11:43:20,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:43:20,390 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 11:43:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73981850] [2023-11-17 11:43:20,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:43:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016279047] [2023-11-17 11:43:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016279047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:43:20,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:43:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-17 11:43:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042722489] [2023-11-17 11:43:20,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:43:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:43:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:43:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:43:20,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:20,392 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 11:43:20,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:20,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:20,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:20,651 INFO L124 PetriNetUnfolderBase]: 41/139 cut-off events. [2023-11-17 11:43:20,651 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-17 11:43:20,652 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 242 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 11:43:20,653 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 64 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-11-17 11:43:20,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 683 flow [2023-11-17 11:43:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:43:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:43:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2023-11-17 11:43:20,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20297029702970298 [2023-11-17 11:43:20,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 123 transitions. [2023-11-17 11:43:20,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 123 transitions. [2023-11-17 11:43:20,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:20,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 123 transitions. [2023-11-17 11:43:20,656 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 11:43:20,657 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 11:43:20,657 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 11:43:20,657 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 194 flow. Second operand 6 states and 123 transitions. [2023-11-17 11:43:20,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 683 flow [2023-11-17 11:43:20,660 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 11:43:20,661 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 229 flow [2023-11-17 11:43:20,661 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 11:43:20,661 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2023-11-17 11:43:20,661 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 229 flow [2023-11-17 11:43:20,662 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 11:43:20,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:20,662 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:43:20,669 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 11:43:20,867 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 11:43:20,868 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 11:43:20,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash 731766539, now seen corresponding path program 4 times [2023-11-17 11:43:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:20,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550939258] [2023-11-17 11:43:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:21,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:43:21,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105631984] [2023-11-17 11:43:21,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:43:21,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:43:21,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:21,331 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 11:43:21,372 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 11:43:22,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:43:22,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:43:22,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 3632 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:43:22,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:43:22,774 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 11:43:22,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:43:22,999 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 11:43:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550939258] [2023-11-17 11:43:23,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:43:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105631984] [2023-11-17 11:43:23,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105631984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:43:23,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:43:23,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-17 11:43:23,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666190597] [2023-11-17 11:43:23,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 11:43:23,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 11:43:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 11:43:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:43:23,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2023-11-17 11:43:23,006 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 11:43:23,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:23,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2023-11-17 11:43:23,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:23,695 INFO L124 PetriNetUnfolderBase]: 41/187 cut-off events. [2023-11-17 11:43:23,695 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-11-17 11:43:23,697 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 242 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 11:43:23,698 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 22 selfloop transitions, 24 changer transitions 0/49 dead transitions. [2023-11-17 11:43:23,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 49 transitions, 393 flow [2023-11-17 11:43:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 11:43:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 11:43:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 414 transitions. [2023-11-17 11:43:23,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1707920792079208 [2023-11-17 11:43:23,701 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 414 transitions. [2023-11-17 11:43:23,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 414 transitions. [2023-11-17 11:43:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:23,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 414 transitions. [2023-11-17 11:43:23,705 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 11:43:23,708 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 11:43:23,709 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 11:43:23,709 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 229 flow. Second operand 24 states and 414 transitions. [2023-11-17 11:43:23,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 49 transitions, 393 flow [2023-11-17 11:43:23,711 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 11:43:23,713 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 463 flow [2023-11-17 11:43:23,713 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 11:43:23,715 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 65 predicate places. [2023-11-17 11:43:23,715 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 463 flow [2023-11-17 11:43:23,715 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 11:43:23,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:23,715 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 11:43:23,729 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 11:43:23,929 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 11:43:23,929 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 11:43:23,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash -689156853, now seen corresponding path program 5 times [2023-11-17 11:43:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860769954] [2023-11-17 11:43:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:24,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 11:43:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984017496] [2023-11-17 11:43:24,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:43:24,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:43:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:24,779 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 11:43:24,780 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 11:52:47,340 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 11:52:47,367 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 11:52:48,416 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 11:52:48,540 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 11:52:48,575 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 11:52:48,576 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-11-17 11:52:48,577 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-17 11:52:48,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:52:48,578 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 11:52:48,578 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:52:48,579 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-17 11:52:48,579 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-11-17 11:52:48,595 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:52:48,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:52:48,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:52:48 BasicIcfg [2023-11-17 11:52:48,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:52:48,599 INFO L158 Benchmark]: Toolchain (without parser) took 586996.23ms. Allocated memory was 281.0MB in the beginning and 405.8MB in the end (delta: 124.8MB). Free memory was 228.0MB in the beginning and 307.7MB in the end (delta: -79.6MB). Peak memory consumption was 248.4MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,600 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:52:48,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.40ms. Allocated memory is still 281.0MB. Free memory was 228.0MB in the beginning and 196.4MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.07ms. Allocated memory is still 281.0MB. Free memory was 196.4MB in the beginning and 193.2MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,600 INFO L158 Benchmark]: Boogie Preprocessor took 44.46ms. Allocated memory is still 281.0MB. Free memory was 193.2MB in the beginning and 248.3MB in the end (delta: -55.0MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,602 INFO L158 Benchmark]: RCFGBuilder took 781.42ms. Allocated memory is still 281.0MB. Free memory was 248.3MB in the beginning and 174.3MB in the end (delta: 73.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,602 INFO L158 Benchmark]: TraceAbstraction took 585591.15ms. Allocated memory was 281.0MB in the beginning and 405.8MB in the end (delta: 124.8MB). Free memory was 173.3MB in the beginning and 307.7MB in the end (delta: -134.4MB). Peak memory consumption was 192.2MB. Max. memory is 8.0GB. [2023-11-17 11:52:48,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 503.40ms. Allocated memory is still 281.0MB. Free memory was 228.0MB in the beginning and 196.4MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.07ms. Allocated memory is still 281.0MB. Free memory was 196.4MB in the beginning and 193.2MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.46ms. Allocated memory is still 281.0MB. Free memory was 193.2MB in the beginning and 248.3MB in the end (delta: -55.0MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. * RCFGBuilder took 781.42ms. Allocated memory is still 281.0MB. Free memory was 248.3MB in the beginning and 174.3MB in the end (delta: 73.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. * TraceAbstraction took 585591.15ms. Allocated memory was 281.0MB in the beginning and 405.8MB in the end (delta: 124.8MB). Free memory was 173.3MB in the beginning and 307.7MB in the end (delta: -134.4MB). Peak memory consumption was 192.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.4s, 45 PlacesBefore, 22 PlacesAfterwards, 58 TransitionsBefore, 31 TransitionsAfterwards, 552 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 41 TotalNumberOfCompositions, 901 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 573, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 274, independent: 260, independent conditional: 0, independent unconditional: 260, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 274, independent: 260, independent conditional: 0, independent unconditional: 260, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12997, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 12977, unknown conditional: 0, unknown unconditional: 12977] ], Cache Queries: [ total: 573, independent: 286, independent conditional: 0, independent unconditional: 286, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 278, unknown conditional: 0, unknown unconditional: 278] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - 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: 585.5s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s 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: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4483 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