/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_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:28:43,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:28:43,923 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 05:28:43,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:28:43,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:28:43,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:28:43,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:28:43,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:28:43,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:28:43,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:28:43,942 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:28:43,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:28:43,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:28:43,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:28:43,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:28:43,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:28:43,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:28:43,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:28:43,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:28:43,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:28:43,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:28:43,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:28:43,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:28:43,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:28:43,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:28:43,945 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:28:43,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:28:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:28:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:28:43,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:28:43,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:28:43,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:28:43,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:28:43,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:28:43,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:28:43,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:28:44,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:28:44,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:28:44,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:28:44,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:28:44,211 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:28:44,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-27 05:28:45,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:28:45,369 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:28:45,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-27 05:28:45,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f50c336a/d468097ba7ae4b45b482cad02b784bb9/FLAG10da8f4d0 [2023-08-27 05:28:45,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f50c336a/d468097ba7ae4b45b482cad02b784bb9 [2023-08-27 05:28:45,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:28:45,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:28:45,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:28:45,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:28:45,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:28:45,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6729a435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45, skipping insertion in model container [2023-08-27 05:28:45,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,437 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:28:45,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:28:45,755 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:28:45,765 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:28:45,766 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:28:45,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:28:45,835 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:28:45,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45 WrapperNode [2023-08-27 05:28:45,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:28:45,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:28:45,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:28:45,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:28:45,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,889 INFO L138 Inliner]: procedures = 279, calls = 89, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 416 [2023-08-27 05:28:45,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:28:45,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:28:45,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:28:45,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:28:45,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:28:45,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:28:45,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:28:45,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:28:45,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (1/1) ... [2023-08-27 05:28:45,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:28:45,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:28:45,943 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 05:28:45,953 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 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 05:28:45,970 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:28:45,970 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:28:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-27 05:28:45,971 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:28:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:28:45,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:28:45,972 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 05:28:46,098 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:28:46,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:28:46,556 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:28:46,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:28:46,566 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-27 05:28:46,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:28:46 BoogieIcfgContainer [2023-08-27 05:28:46,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:28:46,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:28:46,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:28:46,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:28:46,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:28:45" (1/3) ... [2023-08-27 05:28:46,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e148a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:28:46, skipping insertion in model container [2023-08-27 05:28:46,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:45" (2/3) ... [2023-08-27 05:28:46,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e148a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:28:46, skipping insertion in model container [2023-08-27 05:28:46,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:28:46" (3/3) ... [2023-08-27 05:28:46,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-27 05:28:46,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:28:46,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-27 05:28:46,586 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:28:46,700 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:28:46,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 447 transitions, 936 flow [2023-08-27 05:28:47,100 INFO L124 PetriNetUnfolderBase]: 194/1637 cut-off events. [2023-08-27 05:28:47,100 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 05:28:47,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 1637 events. 194/1637 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 10947 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 832. Up to 16 conditions per place. [2023-08-27 05:28:47,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 447 transitions, 936 flow [2023-08-27 05:28:47,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 445 transitions, 932 flow [2023-08-27 05:28:47,137 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:28:47,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 445 transitions, 932 flow [2023-08-27 05:28:47,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 445 transitions, 932 flow [2023-08-27 05:28:47,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 445 transitions, 932 flow [2023-08-27 05:28:47,389 INFO L124 PetriNetUnfolderBase]: 194/1635 cut-off events. [2023-08-27 05:28:47,390 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 05:28:47,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 1635 events. 194/1635 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 10946 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 832. Up to 16 conditions per place. [2023-08-27 05:28:47,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 89970 [2023-08-27 05:29:02,480 INFO L134 LiptonReduction]: Checked pairs total: 171552 [2023-08-27 05:29:02,481 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-08-27 05:29:02,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:29:02,493 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;@2338a705, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:29:02,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:29:02,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:29:02,498 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2023-08-27 05:29:02,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:29:02,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:29:02,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:29:02,499 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 05:29:02,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:29:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -176160241, now seen corresponding path program 1 times [2023-08-27 05:29:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:29:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616070290] [2023-08-27 05:29:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:29:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:29:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:29:02,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:29:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:29:02,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:29:02,678 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:29:02,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:29:02,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:29:02,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:29:02,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:29:02,680 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:29:02,686 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:29:02,687 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:29:02,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:29:02,769 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-27 05:29:02,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 686 transitions, 1462 flow [2023-08-27 05:29:04,822 INFO L124 PetriNetUnfolderBase]: 1235/8023 cut-off events. [2023-08-27 05:29:04,822 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-27 05:29:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 8023 events. 1235/8023 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 76189 event pairs, 22 based on Foata normal form. 0/6546 useless extension candidates. Maximal degree in co-relation 4968. Up to 192 conditions per place. [2023-08-27 05:29:04,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 608 places, 686 transitions, 1462 flow [2023-08-27 05:29:05,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 684 transitions, 1458 flow [2023-08-27 05:29:05,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:29:05,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 684 transitions, 1458 flow [2023-08-27 05:29:05,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 684 transitions, 1458 flow [2023-08-27 05:29:05,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 684 transitions, 1458 flow [2023-08-27 05:29:06,825 INFO L124 PetriNetUnfolderBase]: 1235/8019 cut-off events. [2023-08-27 05:29:06,825 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-27 05:29:06,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8693 conditions, 8019 events. 1235/8019 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 76063 event pairs, 22 based on Foata normal form. 0/6546 useless extension candidates. Maximal degree in co-relation 4966. Up to 192 conditions per place. [2023-08-27 05:29:07,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 292240 [2023-08-27 05:29:24,643 INFO L134 LiptonReduction]: Checked pairs total: 604342 [2023-08-27 05:29:24,643 INFO L136 LiptonReduction]: Total number of compositions: 574 [2023-08-27 05:29:24,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:29:24,646 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;@2338a705, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:29:24,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:29:24,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:29:24,654 INFO L124 PetriNetUnfolderBase]: 25/144 cut-off events. [2023-08-27 05:29:24,654 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 05:29:24,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:29:24,654 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:29:24,654 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 05:29:24,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:29:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -858063799, now seen corresponding path program 1 times [2023-08-27 05:29:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:29:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658837361] [2023-08-27 05:29:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:29:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:29:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:29:24,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:29:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:29:24,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:29:24,746 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:29:24,746 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:29:24,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:29:24,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:29:24,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:29:24,746 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:29:24,747 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:29:24,747 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:29:24,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:29:24,816 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-27 05:29:24,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 925 transitions, 1994 flow [2023-08-27 05:29:42,544 INFO L124 PetriNetUnfolderBase]: 9236/42723 cut-off events. [2023-08-27 05:29:42,544 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2023-08-27 05:29:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49897 conditions, 42723 events. 9236/42723 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 509215 event pairs, 512 based on Foata normal form. 0/34839 useless extension candidates. Maximal degree in co-relation 26786. Up to 2304 conditions per place. [2023-08-27 05:29:44,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 925 transitions, 1994 flow [2023-08-27 05:29:45,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 810 places, 923 transitions, 1990 flow [2023-08-27 05:29:45,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:29:45,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 810 places, 923 transitions, 1990 flow [2023-08-27 05:29:45,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 810 places, 923 transitions, 1990 flow [2023-08-27 05:29:45,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 810 places, 923 transitions, 1990 flow [2023-08-27 05:30:02,246 INFO L124 PetriNetUnfolderBase]: 9236/42717 cut-off events. [2023-08-27 05:30:02,246 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2023-08-27 05:30:04,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49891 conditions, 42717 events. 9236/42717 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 508663 event pairs, 512 based on Foata normal form. 0/34839 useless extension candidates. Maximal degree in co-relation 26782. Up to 2304 conditions per place. [2023-08-27 05:30:08,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 606810 [2023-08-27 05:30:28,462 INFO L134 LiptonReduction]: Checked pairs total: 1415303 [2023-08-27 05:30:28,462 INFO L136 LiptonReduction]: Total number of compositions: 781 [2023-08-27 05:30:28,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:30:28,465 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;@2338a705, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:30:28,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 05:30:28,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:30:28,490 INFO L124 PetriNetUnfolderBase]: 103/477 cut-off events. [2023-08-27 05:30:28,490 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 05:30:28,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:30:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:30:28,491 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 05:30:28,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:30:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -787144595, now seen corresponding path program 1 times [2023-08-27 05:30:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:30:28,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873155982] [2023-08-27 05:30:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:30:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:30:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:30:28,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:30:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:30:28,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:30:28,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:30:28,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 05:30:28,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 05:30:28,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 05:30:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:30:28,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:30:28,618 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-27 05:30:28,618 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:30:28,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:30:28,698 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-27 05:30:28,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1016 places, 1164 transitions, 2532 flow