/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:31:27,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:31:27,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 05:31:27,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:31:27,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:31:27,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:31:27,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:31:27,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:31:27,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:31:27,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:31:27,567 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:31:27,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:31:27,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:31:27,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:31:27,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:31:27,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:31:27,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:31:27,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:31:27,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:31:27,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:31:27,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:31:27,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:31:27,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:31:27,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:31:27,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:31:27,572 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:31:27,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:31:27,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:31:27,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:31:27,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:31:27,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:31:27,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:31:27,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:31:27,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:31:27,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:31:27,575 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:31:27,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:31:27,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:31:27,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:31:27,911 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:31:27,911 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:31:27,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-27 05:31:29,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:31:29,300 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:31:29,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-27 05:31:29,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07cd9e451/6f5c1bf2e5794966b1e7db485a5f42f5/FLAGa6f4224ec [2023-08-27 05:31:29,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07cd9e451/6f5c1bf2e5794966b1e7db485a5f42f5 [2023-08-27 05:31:29,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:31:29,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:31:29,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:31:29,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:31:29,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:31:29,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:29" (1/1) ... [2023-08-27 05:31:29,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61075651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:29, skipping insertion in model container [2023-08-27 05:31:29,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:29" (1/1) ... [2023-08-27 05:31:29,388 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:31:29,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:31:29,901 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:31:29,927 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:31:29,928 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:31:29,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:31:30,042 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:31:30,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30 WrapperNode [2023-08-27 05:31:30,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:31:30,045 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:31:30,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:31:30,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:31:30,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,134 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 376 [2023-08-27 05:31:30,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:31:30,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:31:30,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:31:30,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:31:30,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,171 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:31:30,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:31:30,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:31:30,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:31:30,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (1/1) ... [2023-08-27 05:31:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:31:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:31:30,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 05:31:30,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 05:31:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:31:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 05:31:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 05:31:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 05:31:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:31:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:31:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:31:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:31:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:31:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:31:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 05:31:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:31:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 05:31:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-27 05:31:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-27 05:31:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:31:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:31:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:31:30,283 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:31:30,427 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:31:30,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:31:30,795 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:31:30,803 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:31:30,803 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-27 05:31:30,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:30 BoogieIcfgContainer [2023-08-27 05:31:30,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:31:30,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:31:30,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:31:30,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:31:30,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:31:29" (1/3) ... [2023-08-27 05:31:30,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c26142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:30, skipping insertion in model container [2023-08-27 05:31:30,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:30" (2/3) ... [2023-08-27 05:31:30,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c26142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:30, skipping insertion in model container [2023-08-27 05:31:30,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:30" (3/3) ... [2023-08-27 05:31:30,813 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-08-27 05:31:30,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:31:30,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-27 05:31:30,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:31:30,964 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:31:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 404 transitions, 850 flow [2023-08-27 05:31:31,403 INFO L124 PetriNetUnfolderBase]: 170/1293 cut-off events. [2023-08-27 05:31:31,403 INFO L125 PetriNetUnfolderBase]: For 36/55 co-relation queries the response was YES. [2023-08-27 05:31:31,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 1293 events. 170/1293 cut-off events. For 36/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8451 event pairs, 0 based on Foata normal form. 0/1035 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-27 05:31:31,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 364 places, 404 transitions, 850 flow [2023-08-27 05:31:31,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 402 transitions, 846 flow [2023-08-27 05:31:31,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:31:31,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 402 transitions, 846 flow [2023-08-27 05:31:31,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 402 transitions, 846 flow [2023-08-27 05:31:31,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 402 transitions, 846 flow [2023-08-27 05:31:31,691 INFO L124 PetriNetUnfolderBase]: 170/1291 cut-off events. [2023-08-27 05:31:31,691 INFO L125 PetriNetUnfolderBase]: For 36/55 co-relation queries the response was YES. [2023-08-27 05:31:31,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1291 events. 170/1291 cut-off events. For 36/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8428 event pairs, 0 based on Foata normal form. 0/1035 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-27 05:31:31,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 70448 [2023-08-27 05:31:48,018 INFO L134 LiptonReduction]: Checked pairs total: 147293 [2023-08-27 05:31:48,018 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-08-27 05:31:48,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:31:48,036 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c60ec72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:31:48,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:31:48,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:31:48,042 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-08-27 05:31:48,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:31:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:31:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:31:48,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 05:31:48,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:31:48,066 INFO L85 PathProgramCache]: Analyzing trace with hash -69761704, now seen corresponding path program 1 times [2023-08-27 05:31:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:31:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056370132] [2023-08-27 05:31:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:31:48,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:31:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:31:48,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:31:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:31:48,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:31:48,351 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:31:48,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:31:48,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:31:48,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:31:48,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:31:48,358 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:31:48,363 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:31:48,364 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:31:48,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:31:48,460 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-27 05:31:48,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 568 places, 643 transitions, 1376 flow [2023-08-27 05:31:50,920 INFO L124 PetriNetUnfolderBase]: 1154/6862 cut-off events. [2023-08-27 05:31:50,921 INFO L125 PetriNetUnfolderBase]: For 602/677 co-relation queries the response was YES. [2023-08-27 05:31:51,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 6862 events. 1154/6862 cut-off events. For 602/677 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66385 event pairs, 22 based on Foata normal form. 0/5466 useless extension candidates. Maximal degree in co-relation 4194. Up to 192 conditions per place. [2023-08-27 05:31:51,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 568 places, 643 transitions, 1376 flow [2023-08-27 05:31:51,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 566 places, 641 transitions, 1372 flow [2023-08-27 05:31:51,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:31:51,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 566 places, 641 transitions, 1372 flow [2023-08-27 05:31:51,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 566 places, 641 transitions, 1372 flow [2023-08-27 05:31:51,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 641 transitions, 1372 flow [2023-08-27 05:31:53,114 INFO L124 PetriNetUnfolderBase]: 1154/6858 cut-off events. [2023-08-27 05:31:53,115 INFO L125 PetriNetUnfolderBase]: For 602/677 co-relation queries the response was YES. [2023-08-27 05:31:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 6858 events. 1154/6858 cut-off events. For 602/677 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66285 event pairs, 22 based on Foata normal form. 0/5466 useless extension candidates. Maximal degree in co-relation 4192. Up to 192 conditions per place. [2023-08-27 05:31:53,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 253196 [2023-08-27 05:32:12,871 INFO L134 LiptonReduction]: Checked pairs total: 529109 [2023-08-27 05:32:12,871 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-08-27 05:32:12,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:32:12,875 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c60ec72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:32:12,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:32:12,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:32:12,889 INFO L124 PetriNetUnfolderBase]: 19/138 cut-off events. [2023-08-27 05:32:12,889 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-27 05:32:12,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:32:12,889 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:32:12,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 05:32:12,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:32:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash -832050058, now seen corresponding path program 1 times [2023-08-27 05:32:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:32:12,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041793289] [2023-08-27 05:32:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:32:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:32:12,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:32:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:32:13,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:32:13,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:32:13,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:32:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:32:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:32:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:32:13,068 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:32:13,069 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:32:13,069 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:32:13,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:32:13,151 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-27 05:32:13,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 772 places, 882 transitions, 1908 flow [2023-08-27 05:32:31,825 INFO L124 PetriNetUnfolderBase]: 9044/39971 cut-off events. [2023-08-27 05:32:31,826 INFO L125 PetriNetUnfolderBase]: For 7059/7242 co-relation queries the response was YES. [2023-08-27 05:32:34,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47145 conditions, 39971 events. 9044/39971 cut-off events. For 7059/7242 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 479002 event pairs, 912 based on Foata normal form. 0/32279 useless extension candidates. Maximal degree in co-relation 24722. Up to 2304 conditions per place. [2023-08-27 05:32:34,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 772 places, 882 transitions, 1908 flow [2023-08-27 05:32:34,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 770 places, 880 transitions, 1904 flow [2023-08-27 05:32:34,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:32:34,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 770 places, 880 transitions, 1904 flow [2023-08-27 05:32:34,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 770 places, 880 transitions, 1904 flow [2023-08-27 05:32:34,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 770 places, 880 transitions, 1904 flow [2023-08-27 05:32:52,560 INFO L124 PetriNetUnfolderBase]: 9044/39965 cut-off events. [2023-08-27 05:32:52,560 INFO L125 PetriNetUnfolderBase]: For 7059/7242 co-relation queries the response was YES. [2023-08-27 05:32:54,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47139 conditions, 39965 events. 9044/39965 cut-off events. For 7059/7242 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 478940 event pairs, 912 based on Foata normal form. 0/32279 useless extension candidates. Maximal degree in co-relation 24718. Up to 2304 conditions per place. [2023-08-27 05:32:59,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 548244 [2023-08-27 05:33:21,342 INFO L134 LiptonReduction]: Checked pairs total: 1292513 [2023-08-27 05:33:21,342 INFO L136 LiptonReduction]: Total number of compositions: 746 [2023-08-27 05:33:21,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:33:21,345 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c60ec72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:33:21,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:33:21,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:33:21,367 INFO L124 PetriNetUnfolderBase]: 82/398 cut-off events. [2023-08-27 05:33:21,367 INFO L125 PetriNetUnfolderBase]: For 49/59 co-relation queries the response was YES. [2023-08-27 05:33:21,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:33:21,367 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:33:21,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 05:33:21,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:33:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 881207009, now seen corresponding path program 1 times [2023-08-27 05:33:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:33:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243450040] [2023-08-27 05:33:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:33:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:33:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:33:21,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:33:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:33:21,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:33:21,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:33:21,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:33:21,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:33:21,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:33:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:33:21,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:33:21,434 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:33:21,434 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:33:21,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:33:21,529 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-27 05:33:21,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 976 places, 1121 transitions, 2446 flow