/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.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:23:45,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:23:45,281 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 [2023-08-25 18:23:45,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:23:45,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:23:45,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:23:45,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:23:45,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:23:45,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:23:45,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:23:45,313 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:23:45,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:23:45,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:23:45,314 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:23:45,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:23:45,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:23:45,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:23:45,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:23:45,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:23:45,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:23:45,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:23:45,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:23:45,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:23:45,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:23:45,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:23:45,317 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:23:45,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:23:45,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:23:45,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:23:45,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:23:45,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:23:45,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:23:45,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:23:45,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:23:45,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:23:45,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:23:45,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:23:45,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:23:45,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:23:45,568 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:23:45,568 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:23:45,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-25 18:23:46,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:23:46,698 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:23:46,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-25 18:23:46,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23afed938/184ef29dd036467ebf5407c87220de1b/FLAG60661b377 [2023-08-25 18:23:46,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23afed938/184ef29dd036467ebf5407c87220de1b [2023-08-25 18:23:46,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:23:46,728 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:23:46,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:23:46,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:23:46,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:23:46,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:23:46" (1/1) ... [2023-08-25 18:23:46,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693fe5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:46, skipping insertion in model container [2023-08-25 18:23:46,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:23:46" (1/1) ... [2023-08-25 18:23:46,781 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:23:47,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:23:47,089 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:23:47,100 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:23:47,101 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:23:47,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:23:47,176 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:23:47,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47 WrapperNode [2023-08-25 18:23:47,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:23:47,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:23:47,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:23:47,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:23:47,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,224 INFO L138 Inliner]: procedures = 278, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 319 [2023-08-25 18:23:47,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:23:47,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:23:47,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:23:47,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:23:47,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:23:47,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:23:47,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:23:47,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:23:47,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (1/1) ... [2023-08-25 18:23:47,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:23:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:23:47,301 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) [2023-08-25 18:23:47,302 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 [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 18:23:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 18:23:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:23:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 18:23:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 18:23:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:23:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 18:23:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:23:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:23:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:23:47,326 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 18:23:47,489 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:23:47,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:23:47,944 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:23:47,956 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:23:47,957 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-25 18:23:47,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:23:47 BoogieIcfgContainer [2023-08-25 18:23:47,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:23:47,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:23:47,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:23:47,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:23:47,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:23:46" (1/3) ... [2023-08-25 18:23:47,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d2fc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:23:47, skipping insertion in model container [2023-08-25 18:23:47,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:23:47" (2/3) ... [2023-08-25 18:23:47,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d2fc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:23:47, skipping insertion in model container [2023-08-25 18:23:47,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:23:47" (3/3) ... [2023-08-25 18:23:47,965 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-25 18:23:47,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:23:47,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-25 18:23:47,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:23:48,079 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 18:23:48,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 343 transitions, 708 flow [2023-08-25 18:23:48,297 INFO L124 PetriNetUnfolderBase]: 54/631 cut-off events. [2023-08-25 18:23:48,297 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-25 18:23:48,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 631 events. 54/631 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2922 event pairs, 0 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-25 18:23:48,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 343 transitions, 708 flow [2023-08-25 18:23:48,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 320 places, 337 transitions, 690 flow [2023-08-25 18:23:48,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:23:48,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 320 places, 337 transitions, 690 flow [2023-08-25 18:23:48,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 320 places, 337 transitions, 690 flow [2023-08-25 18:23:48,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 337 transitions, 690 flow [2023-08-25 18:23:48,422 INFO L124 PetriNetUnfolderBase]: 50/615 cut-off events. [2023-08-25 18:23:48,422 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-25 18:23:48,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 615 events. 50/615 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2668 event pairs, 0 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-08-25 18:23:48,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 40248 [2023-08-25 18:24:00,921 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 193 DAG size of output: 191 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:24:09,195 INFO L134 LiptonReduction]: Checked pairs total: 193986 [2023-08-25 18:24:09,196 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-08-25 18:24:09,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:24:09,206 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;@69b1d2ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:24:09,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:24:09,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:24:09,209 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-25 18:24:09,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:24:09,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:24:09,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 18:24:09,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:24:09,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:24:09,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2027981707, now seen corresponding path program 1 times [2023-08-25 18:24:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:24:09,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803816217] [2023-08-25 18:24:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:24:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:24:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:09,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:24:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:09,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:24:09,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:24:09,401 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:24:09,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:24:09,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:24:09,405 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:24:09,408 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:24:09,409 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:24:09,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 18:24:09,497 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 18:24:09,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 551 transitions, 1150 flow [2023-08-25 18:24:09,823 INFO L124 PetriNetUnfolderBase]: 197/1839 cut-off events. [2023-08-25 18:24:09,823 INFO L125 PetriNetUnfolderBase]: For 72/114 co-relation queries the response was YES. [2023-08-25 18:24:09,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1839 events. 197/1839 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13030 event pairs, 2 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1142. Up to 32 conditions per place. [2023-08-25 18:24:09,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 516 places, 551 transitions, 1150 flow [2023-08-25 18:24:09,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 512 places, 547 transitions, 1142 flow [2023-08-25 18:24:09,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:24:09,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 512 places, 547 transitions, 1142 flow [2023-08-25 18:24:09,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 512 places, 547 transitions, 1142 flow [2023-08-25 18:24:09,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 512 places, 547 transitions, 1142 flow [2023-08-25 18:24:10,172 INFO L124 PetriNetUnfolderBase]: 197/1835 cut-off events. [2023-08-25 18:24:10,172 INFO L125 PetriNetUnfolderBase]: For 72/114 co-relation queries the response was YES. [2023-08-25 18:24:10,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1835 events. 197/1835 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13046 event pairs, 2 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1138. Up to 32 conditions per place. [2023-08-25 18:24:10,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 168556 [2023-08-25 18:24:26,288 INFO L134 LiptonReduction]: Checked pairs total: 991833 [2023-08-25 18:24:26,288 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-08-25 18:24:26,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:24:26,290 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;@69b1d2ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:24:26,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:24:26,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:24:26,296 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-25 18:24:26,297 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 18:24:26,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:24:26,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 18:24:26,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:24:26,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:24:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1236490532, now seen corresponding path program 1 times [2023-08-25 18:24:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:24:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303429903] [2023-08-25 18:24:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:24:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:24:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:26,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:24:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:26,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:24:26,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:24:26,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:24:26,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:24:26,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:24:26,373 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:24:26,373 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:24:26,373 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:24:26,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 18:24:26,453 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-25 18:24:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 708 places, 759 transitions, 1596 flow [2023-08-25 18:24:27,875 INFO L124 PetriNetUnfolderBase]: 676/4983 cut-off events. [2023-08-25 18:24:27,875 INFO L125 PetriNetUnfolderBase]: For 419/533 co-relation queries the response was YES. [2023-08-25 18:24:27,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 4983 events. 676/4983 cut-off events. For 419/533 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 42792 event pairs, 64 based on Foata normal form. 0/4203 useless extension candidates. Maximal degree in co-relation 3199. Up to 192 conditions per place. [2023-08-25 18:24:27,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 708 places, 759 transitions, 1596 flow [2023-08-25 18:24:27,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 704 places, 755 transitions, 1588 flow [2023-08-25 18:24:27,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:24:27,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 704 places, 755 transitions, 1588 flow [2023-08-25 18:24:27,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 704 places, 755 transitions, 1588 flow [2023-08-25 18:24:27,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 704 places, 755 transitions, 1588 flow [2023-08-25 18:24:29,320 INFO L124 PetriNetUnfolderBase]: 676/4979 cut-off events. [2023-08-25 18:24:29,320 INFO L125 PetriNetUnfolderBase]: For 419/533 co-relation queries the response was YES. [2023-08-25 18:24:29,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 4979 events. 676/4979 cut-off events. For 419/533 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 42691 event pairs, 64 based on Foata normal form. 0/4203 useless extension candidates. Maximal degree in co-relation 3195. Up to 192 conditions per place. [2023-08-25 18:24:29,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 381084 [2023-08-25 18:24:48,426 INFO L134 LiptonReduction]: Checked pairs total: 2307779 [2023-08-25 18:24:48,426 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-25 18:24:48,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:24:48,429 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@69b1d2ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:24:48,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:24:48,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:24:48,441 INFO L124 PetriNetUnfolderBase]: 12/252 cut-off events. [2023-08-25 18:24:48,441 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-25 18:24:48,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:24:48,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 18:24:48,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:24:48,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:24:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 893446428, now seen corresponding path program 1 times [2023-08-25 18:24:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:24:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755161574] [2023-08-25 18:24:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:24:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:24:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:48,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:24:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:24:48,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:24:48,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:24:48,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:24:48,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:24:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:24:48,504 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:24:48,505 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:24:48,505 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:24:48,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 18:24:48,565 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-25 18:24:48,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 900 places, 967 transitions, 2046 flow [2023-08-25 18:24:54,768 INFO L124 PetriNetUnfolderBase]: 2679/15247 cut-off events. [2023-08-25 18:24:54,768 INFO L125 PetriNetUnfolderBase]: For 2144/2354 co-relation queries the response was YES. [2023-08-25 18:24:55,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17412 conditions, 15247 events. 2679/15247 cut-off events. For 2144/2354 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 156106 event pairs, 313 based on Foata normal form. 0/13071 useless extension candidates. Maximal degree in co-relation 9511. Up to 1024 conditions per place. [2023-08-25 18:24:55,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 900 places, 967 transitions, 2046 flow [2023-08-25 18:24:55,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 896 places, 963 transitions, 2038 flow [2023-08-25 18:24:55,363 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:24:55,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 896 places, 963 transitions, 2038 flow [2023-08-25 18:24:55,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 896 places, 963 transitions, 2038 flow [2023-08-25 18:24:55,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 896 places, 963 transitions, 2038 flow [2023-08-25 18:25:01,449 INFO L124 PetriNetUnfolderBase]: 2679/15243 cut-off events. [2023-08-25 18:25:01,450 INFO L125 PetriNetUnfolderBase]: For 2144/2354 co-relation queries the response was YES. [2023-08-25 18:25:01,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17408 conditions, 15243 events. 2679/15243 cut-off events. For 2144/2354 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 156495 event pairs, 313 based on Foata normal form. 0/13071 useless extension candidates. Maximal degree in co-relation 9507. Up to 1024 conditions per place. [2023-08-25 18:25:03,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 679112 [2023-08-25 18:25:25,002 INFO L134 LiptonReduction]: Checked pairs total: 4153963 [2023-08-25 18:25:25,002 INFO L136 LiptonReduction]: Total number of compositions: 524 [2023-08-25 18:25:25,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:25:25,005 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;@69b1d2ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:25:25,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:25:25,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:25:25,034 INFO L124 PetriNetUnfolderBase]: 37/495 cut-off events. [2023-08-25 18:25:25,034 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-25 18:25:25,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:25:25,034 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-25 18:25:25,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:25:25,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:25:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash 280377189, now seen corresponding path program 1 times [2023-08-25 18:25:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:25:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694957979] [2023-08-25 18:25:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:25:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:25:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:25:25,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:25:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:25:25,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:25:25,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:25:25,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:25:25,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:25:25,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 18:25:25,072 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:25:25,073 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:25:25,073 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:25:25,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-25 18:25:25,158 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-25 18:25:25,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1092 places, 1175 transitions, 2500 flow [2023-08-25 18:25:55,491 INFO L124 PetriNetUnfolderBase]: 11822/54231 cut-off events. [2023-08-25 18:25:55,492 INFO L125 PetriNetUnfolderBase]: For 10450/10780 co-relation queries the response was YES. [2023-08-25 18:25:58,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64657 conditions, 54231 events. 11822/54231 cut-off events. For 10450/10780 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 670679 event pairs, 2148 based on Foata normal form. 0/47149 useless extension candidates. Maximal degree in co-relation 33041. Up to 5120 conditions per place. [2023-08-25 18:25:58,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 1092 places, 1175 transitions, 2500 flow [2023-08-25 18:25:59,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1088 places, 1171 transitions, 2492 flow [2023-08-25 18:25:59,575 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:25:59,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1088 places, 1171 transitions, 2492 flow [2023-08-25 18:25:59,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1088 places, 1171 transitions, 2492 flow [2023-08-25 18:25:59,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1088 places, 1171 transitions, 2492 flow [2023-08-25 18:26:28,146 INFO L124 PetriNetUnfolderBase]: 11822/54227 cut-off events. [2023-08-25 18:26:28,146 INFO L125 PetriNetUnfolderBase]: For 10450/10780 co-relation queries the response was YES. [2023-08-25 18:26:31,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64653 conditions, 54227 events. 11822/54227 cut-off events. For 10450/10780 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 668543 event pairs, 2148 based on Foata normal form. 0/47149 useless extension candidates. Maximal degree in co-relation 33037. Up to 5120 conditions per place. [2023-08-25 18:26:39,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 1062640 [2023-08-25 18:26:58,714 INFO L134 LiptonReduction]: Checked pairs total: 6494619 [2023-08-25 18:26:58,714 INFO L136 LiptonReduction]: Total number of compositions: 621 [2023-08-25 18:26:58,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:26:58,716 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;@69b1d2ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:26:58,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:26:58,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:26:58,780 INFO L124 PetriNetUnfolderBase]: 64/838 cut-off events. [2023-08-25 18:26:58,780 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-25 18:26:58,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:26:58,780 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:26:58,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:26:58,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:26:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1639047864, now seen corresponding path program 1 times [2023-08-25 18:26:58,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:26:58,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834806096] [2023-08-25 18:26:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:26:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:26:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:26:58,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:26:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:26:58,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:26:58,827 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:26:58,827 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:26:58,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:26:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 18:26:58,827 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:26:58,828 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:26:58,828 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:26:58,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-25 18:26:58,918 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-25 18:26:58,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1284 places, 1383 transitions, 2958 flow