/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 -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:53:00,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:53:00,538 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 [2023-08-24 06:53:00,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:53:00,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:53:00,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:53:00,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:53:00,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:53:00,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:53:00,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:53:00,573 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:53:00,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:53:00,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:53:00,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:53:00,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:53:00,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:53:00,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:53:00,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:53:00,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:53:00,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:53:00,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:53:00,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:53:00,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:53:00,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:53:00,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:53:00,583 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:53:00,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:53:00,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:53:00,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:53:00,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:53:00,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:53:00,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:53:00,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:53:00,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:53:00,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:53:00,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:53:00,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:53:00,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:53:00,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:53:00,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:53:00,943 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:53:00,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-24 06:53:02,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:53:02,458 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:53:02,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-24 06:53:02,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b091d36f/2dfd7dea50f44e7db2c68bf67a324b7c/FLAG0edbe8eb4 [2023-08-24 06:53:02,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b091d36f/2dfd7dea50f44e7db2c68bf67a324b7c [2023-08-24 06:53:02,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:53:02,497 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:53:02,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:53:02,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:53:02,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:53:02,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:53:02" (1/1) ... [2023-08-24 06:53:02,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6595b91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:02, skipping insertion in model container [2023-08-24 06:53:02,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:53:02" (1/1) ... [2023-08-24 06:53:02,550 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:53:02,962 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-08-24 06:53:02,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:53:03,004 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:53:03,031 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:53:03,032 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:53:03,054 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [1044] [2023-08-24 06:53:03,059 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-08-24 06:53:03,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:53:03,148 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:53:03,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03 WrapperNode [2023-08-24 06:53:03,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:53:03,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:53:03,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:53:03,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:53:03,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,209 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 240 [2023-08-24 06:53:03,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:53:03,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:53:03,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:53:03,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:53:03,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:53:03,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:53:03,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:53:03,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:53:03,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (1/1) ... [2023-08-24 06:53:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:53:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:53:03,270 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) [2023-08-24 06:53:03,309 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 [2023-08-24 06:53:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:53:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 06:53:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 06:53:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:53:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:53:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:53:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:53:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:53:03,339 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:53:03,513 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:53:03,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:53:03,901 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:53:03,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:53:03,908 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-24 06:53:03,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:53:03 BoogieIcfgContainer [2023-08-24 06:53:03,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:53:03,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:53:03,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:53:03,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:53:03,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:53:02" (1/3) ... [2023-08-24 06:53:03,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11365772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:53:03, skipping insertion in model container [2023-08-24 06:53:03,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:53:03" (2/3) ... [2023-08-24 06:53:03,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11365772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:53:03, skipping insertion in model container [2023-08-24 06:53:03,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:53:03" (3/3) ... [2023-08-24 06:53:03,916 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-08-24 06:53:03,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:53:03,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 06:53:03,934 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:53:04,002 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:53:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 242 transitions, 492 flow [2023-08-24 06:53:04,126 INFO L124 PetriNetUnfolderBase]: 45/347 cut-off events. [2023-08-24 06:53:04,127 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:53:04,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 347 events. 45/347 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1034 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-08-24 06:53:04,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 242 transitions, 492 flow [2023-08-24 06:53:04,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 237 transitions, 479 flow [2023-08-24 06:53:04,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:53:04,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 237 transitions, 479 flow [2023-08-24 06:53:04,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 237 transitions, 479 flow [2023-08-24 06:53:04,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 237 transitions, 479 flow [2023-08-24 06:53:04,227 INFO L124 PetriNetUnfolderBase]: 44/342 cut-off events. [2023-08-24 06:53:04,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:53:04,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 342 events. 44/342 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 989 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-08-24 06:53:04,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 17316 [2023-08-24 06:53:14,407 INFO L134 LiptonReduction]: Checked pairs total: 37421 [2023-08-24 06:53:14,407 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-24 06:53:14,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:53:14,425 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:53:14,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:53:14,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:53:14,430 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-24 06:53:14,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:53:14,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:53:14,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:53:14,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:53:14,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:53:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 727801670, now seen corresponding path program 1 times [2023-08-24 06:53:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:53:14,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502267520] [2023-08-24 06:53:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:53:14,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:53:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:14,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:53:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:14,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:53:14,637 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:53:14,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:53:14,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:53:14,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:53:14,642 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:53:14,642 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:53:14,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:53:14,681 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:53:14,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,768 INFO L124 PetriNetUnfolderBase]: 76/557 cut-off events. [2023-08-24 06:53:14,768 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:53:14,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 557 events. 76/557 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2209 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 349. Up to 12 conditions per place. [2023-08-24 06:53:14,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:53:14,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 322 transitions, 662 flow [2023-08-24 06:53:14,851 INFO L124 PetriNetUnfolderBase]: 76/557 cut-off events. [2023-08-24 06:53:14,851 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:53:14,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 557 events. 76/557 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2209 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 349. Up to 12 conditions per place. [2023-08-24 06:53:14,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 48516 [2023-08-24 06:53:25,330 INFO L134 LiptonReduction]: Checked pairs total: 110167 [2023-08-24 06:53:25,331 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-24 06:53:25,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:53:25,334 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:53:25,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:53:25,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:53:25,339 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-08-24 06:53:25,339 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 06:53:25,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:53:25,339 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:53:25,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:53:25,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:53:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash -835699472, now seen corresponding path program 1 times [2023-08-24 06:53:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:53:25,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256013782] [2023-08-24 06:53:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:53:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:53:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:25,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:53:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:25,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:53:25,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:53:25,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:53:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:53:25,469 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:53:25,469 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:53:25,469 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:53:25,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:53:25,518 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:53:25,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,657 INFO L124 PetriNetUnfolderBase]: 112/800 cut-off events. [2023-08-24 06:53:25,657 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:53:25,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 800 events. 112/800 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3645 event pairs, 1 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 565. Up to 16 conditions per place. [2023-08-24 06:53:25,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:53:25,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 402 transitions, 834 flow [2023-08-24 06:53:25,803 INFO L124 PetriNetUnfolderBase]: 112/800 cut-off events. [2023-08-24 06:53:25,803 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:53:25,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 800 events. 112/800 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3645 event pairs, 1 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 565. Up to 16 conditions per place. [2023-08-24 06:53:25,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 91728 [2023-08-24 06:53:35,786 INFO L134 LiptonReduction]: Checked pairs total: 214535 [2023-08-24 06:53:35,786 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-24 06:53:35,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:53:35,789 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:53:35,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:53:35,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:53:35,798 INFO L124 PetriNetUnfolderBase]: 11/90 cut-off events. [2023-08-24 06:53:35,798 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 06:53:35,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:53:35,799 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:53:35,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:53:35,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:53:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1966697445, now seen corresponding path program 1 times [2023-08-24 06:53:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:53:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221713044] [2023-08-24 06:53:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:53:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:53:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:35,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:53:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:35,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:53:35,861 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:53:35,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:53:35,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:53:35,862 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:53:35,862 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:53:35,862 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:53:35,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:53:35,902 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:53:35,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,135 INFO L124 PetriNetUnfolderBase]: 160/1111 cut-off events. [2023-08-24 06:53:36,135 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:53:36,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 1111 events. 160/1111 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5533 event pairs, 6 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 820. Up to 32 conditions per place. [2023-08-24 06:53:36,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,163 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:53:36,163 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 482 transitions, 1008 flow [2023-08-24 06:53:36,352 INFO L124 PetriNetUnfolderBase]: 160/1111 cut-off events. [2023-08-24 06:53:36,352 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:53:36,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 1111 events. 160/1111 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5533 event pairs, 6 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 820. Up to 32 conditions per place. [2023-08-24 06:53:36,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 147576 [2023-08-24 06:53:48,700 INFO L134 LiptonReduction]: Checked pairs total: 352164 [2023-08-24 06:53:48,700 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-08-24 06:53:48,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:53:48,702 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:53:48,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:53:48,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:53:48,716 INFO L124 PetriNetUnfolderBase]: 35/170 cut-off events. [2023-08-24 06:53:48,717 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-24 06:53:48,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:53:48,717 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:53:48,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:53:48,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:53:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash 842898966, now seen corresponding path program 1 times [2023-08-24 06:53:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:53:48,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472557637] [2023-08-24 06:53:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:53:48,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:53:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:48,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:53:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:53:48,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:53:48,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:53:48,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:53:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:53:48,776 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:53:48,776 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:53:48,776 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:53:48,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:53:48,820 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:53:48,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,212 INFO L124 PetriNetUnfolderBase]: 236/1562 cut-off events. [2023-08-24 06:53:49,212 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:53:49,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 1562 events. 236/1562 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8526 event pairs, 23 based on Foata normal form. 0/1331 useless extension candidates. Maximal degree in co-relation 1156. Up to 80 conditions per place. [2023-08-24 06:53:49,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:53:49,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 562 transitions, 1184 flow [2023-08-24 06:53:49,527 INFO L124 PetriNetUnfolderBase]: 236/1562 cut-off events. [2023-08-24 06:53:49,527 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:53:49,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 1562 events. 236/1562 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8526 event pairs, 23 based on Foata normal form. 0/1331 useless extension candidates. Maximal degree in co-relation 1156. Up to 80 conditions per place. [2023-08-24 06:53:49,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 216060 [2023-08-24 06:54:01,501 INFO L134 LiptonReduction]: Checked pairs total: 522040 [2023-08-24 06:54:01,501 INFO L136 LiptonReduction]: Total number of compositions: 401 [2023-08-24 06:54:01,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:54:01,503 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:54:01,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:54:01,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:54:01,525 INFO L124 PetriNetUnfolderBase]: 65/261 cut-off events. [2023-08-24 06:54:01,525 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-24 06:54:01,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:54:01,526 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:54:01,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:54:01,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:54:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 108590770, now seen corresponding path program 1 times [2023-08-24 06:54:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:54:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582366287] [2023-08-24 06:54:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:54:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:54:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:01,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:54:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:01,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:54:01,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:54:01,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:54:01,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:54:01,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:54:01,647 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:54:01,647 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:54:01,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:54:01,692 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:54:01,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,209 INFO L124 PetriNetUnfolderBase]: 376/2301 cut-off events. [2023-08-24 06:54:02,209 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:54:02,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 2301 events. 376/2301 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 13848 event pairs, 72 based on Foata normal form. 0/1976 useless extension candidates. Maximal degree in co-relation 1661. Up to 192 conditions per place. [2023-08-24 06:54:02,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,304 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:54:02,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 642 transitions, 1362 flow [2023-08-24 06:54:02,793 INFO L124 PetriNetUnfolderBase]: 376/2301 cut-off events. [2023-08-24 06:54:02,793 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:54:02,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 2301 events. 376/2301 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 13848 event pairs, 72 based on Foata normal form. 0/1976 useless extension candidates. Maximal degree in co-relation 1661. Up to 192 conditions per place. [2023-08-24 06:54:03,044 INFO L119 LiptonReduction]: Number of co-enabled transitions 297180 [2023-08-24 06:54:16,547 INFO L134 LiptonReduction]: Checked pairs total: 744868 [2023-08-24 06:54:16,547 INFO L136 LiptonReduction]: Total number of compositions: 459 [2023-08-24 06:54:16,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:54:16,551 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:54:16,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:54:16,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:54:16,581 INFO L124 PetriNetUnfolderBase]: 80/331 cut-off events. [2023-08-24 06:54:16,581 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-24 06:54:16,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:54:16,581 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:54:16,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:54:16,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:54:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1563700128, now seen corresponding path program 1 times [2023-08-24 06:54:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:54:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579335838] [2023-08-24 06:54:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:54:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:54:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:16,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:54:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:16,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:54:16,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:54:16,666 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:54:16,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:54:16,668 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:54:16,672 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:54:16,675 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:54:16,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:54:16,740 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:54:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:17,898 INFO L124 PetriNetUnfolderBase]: 660/3632 cut-off events. [2023-08-24 06:54:17,898 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:54:18,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 3632 events. 660/3632 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 24762 event pairs, 201 based on Foata normal form. 0/3149 useless extension candidates. Maximal degree in co-relation 2519. Up to 448 conditions per place. [2023-08-24 06:54:18,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:18,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:18,049 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:54:18,049 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:18,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:18,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 630 places, 722 transitions, 1542 flow [2023-08-24 06:54:19,076 INFO L124 PetriNetUnfolderBase]: 660/3632 cut-off events. [2023-08-24 06:54:19,077 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:54:19,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 3632 events. 660/3632 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 24762 event pairs, 201 based on Foata normal form. 0/3149 useless extension candidates. Maximal degree in co-relation 2519. Up to 448 conditions per place. [2023-08-24 06:54:19,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 390936 [2023-08-24 06:54:32,998 INFO L134 LiptonReduction]: Checked pairs total: 980023 [2023-08-24 06:54:32,998 INFO L136 LiptonReduction]: Total number of compositions: 510 [2023-08-24 06:54:33,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:54:33,000 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:54:33,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:54:33,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:54:33,041 INFO L124 PetriNetUnfolderBase]: 115/433 cut-off events. [2023-08-24 06:54:33,041 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-08-24 06:54:33,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:54:33,041 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:54:33,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:54:33,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:54:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash -409839949, now seen corresponding path program 1 times [2023-08-24 06:54:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:54:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667270463] [2023-08-24 06:54:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:54:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:54:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:33,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:54:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:33,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:54:33,158 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:54:33,158 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:54:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:54:33,158 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:54:33,159 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:54:33,159 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:54:33,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:54:33,234 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:54:33,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:35,213 INFO L124 PetriNetUnfolderBase]: 1264/6179 cut-off events. [2023-08-24 06:54:35,213 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:54:35,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 6179 events. 1264/6179 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 48387 event pairs, 522 based on Foata normal form. 0/5410 useless extension candidates. Maximal degree in co-relation 4114. Up to 1024 conditions per place. [2023-08-24 06:54:35,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:35,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:35,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:54:35,574 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:35,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:35,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 802 transitions, 1724 flow [2023-08-24 06:54:37,565 INFO L124 PetriNetUnfolderBase]: 1264/6179 cut-off events. [2023-08-24 06:54:37,566 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:54:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 6179 events. 1264/6179 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 48387 event pairs, 522 based on Foata normal form. 0/5410 useless extension candidates. Maximal degree in co-relation 4114. Up to 1024 conditions per place. [2023-08-24 06:54:38,250 INFO L119 LiptonReduction]: Number of co-enabled transitions 497328 [2023-08-24 06:54:51,593 INFO L134 LiptonReduction]: Checked pairs total: 1242914 [2023-08-24 06:54:51,593 INFO L136 LiptonReduction]: Total number of compositions: 558 [2023-08-24 06:54:51,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:54:51,595 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:54:51,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:54:51,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:54:51,657 INFO L124 PetriNetUnfolderBase]: 141/525 cut-off events. [2023-08-24 06:54:51,657 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-24 06:54:51,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:54:51,658 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:54:51,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:54:51,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:54:51,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1218609414, now seen corresponding path program 1 times [2023-08-24 06:54:51,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:54:51,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951222379] [2023-08-24 06:54:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:54:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:54:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:51,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:54:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:54:51,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:54:51,727 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:54:51,727 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:54:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:54:51,728 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:54:51,728 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:54:51,728 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:54:51,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:54:51,810 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:54:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 768 places, 882 transitions, 1908 flow [2023-08-24 06:54:56,177 INFO L124 PetriNetUnfolderBase]: 2572/11222 cut-off events. [2023-08-24 06:54:56,177 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:54:56,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13599 conditions, 11222 events. 2572/11222 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 101814 event pairs, 1291 based on Foata normal form. 0/9911 useless extension candidates. Maximal degree in co-relation 7246. Up to 2304 conditions per place. [2023-08-24 06:54:56,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 768 places, 882 transitions, 1908 flow [2023-08-24 06:54:56,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 768 places, 882 transitions, 1908 flow [2023-08-24 06:54:56,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:54:56,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 768 places, 882 transitions, 1908 flow [2023-08-24 06:54:56,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 768 places, 882 transitions, 1908 flow [2023-08-24 06:54:56,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 768 places, 882 transitions, 1908 flow [2023-08-24 06:55:00,699 INFO L124 PetriNetUnfolderBase]: 2572/11222 cut-off events. [2023-08-24 06:55:00,699 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:55:01,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13599 conditions, 11222 events. 2572/11222 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 101814 event pairs, 1291 based on Foata normal form. 0/9911 useless extension candidates. Maximal degree in co-relation 7246. Up to 2304 conditions per place. [2023-08-24 06:55:02,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 616356 [2023-08-24 06:55:18,527 INFO L134 LiptonReduction]: Checked pairs total: 1566855 [2023-08-24 06:55:18,527 INFO L136 LiptonReduction]: Total number of compositions: 624 [2023-08-24 06:55:18,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:55:18,529 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:55:18,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:55:18,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:55:18,584 INFO L124 PetriNetUnfolderBase]: 173/627 cut-off events. [2023-08-24 06:55:18,584 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-24 06:55:18,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:55:18,584 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:55:18,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:55:18,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:55:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -135176484, now seen corresponding path program 1 times [2023-08-24 06:55:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:55:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835919634] [2023-08-24 06:55:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:55:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:55:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:55:18,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:55:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:55:18,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:55:18,658 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:55:18,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:55:18,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:55:18,658 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:55:18,659 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:55:18,659 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:55:18,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:55:18,734 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:55:18,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:27,336 INFO L124 PetriNetUnfolderBase]: 5416/21385 cut-off events. [2023-08-24 06:55:27,337 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:55:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26591 conditions, 21385 events. 5416/21385 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 219684 event pairs, 3084 based on Foata normal form. 0/19020 useless extension candidates. Maximal degree in co-relation 13579. Up to 5120 conditions per place. [2023-08-24 06:55:28,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:28,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:28,615 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:55:28,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:28,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:28,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 837 places, 962 transitions, 2094 flow [2023-08-24 06:55:37,305 INFO L124 PetriNetUnfolderBase]: 5416/21385 cut-off events. [2023-08-24 06:55:37,305 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:55:38,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26591 conditions, 21385 events. 5416/21385 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 219684 event pairs, 3084 based on Foata normal form. 0/19020 useless extension candidates. Maximal degree in co-relation 13579. Up to 5120 conditions per place. [2023-08-24 06:55:40,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 748020 [2023-08-24 06:55:57,101 INFO L134 LiptonReduction]: Checked pairs total: 1880448 [2023-08-24 06:55:57,101 INFO L136 LiptonReduction]: Total number of compositions: 676 [2023-08-24 06:55:57,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:55:57,103 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:55:57,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:55:57,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:55:57,201 INFO L124 PetriNetUnfolderBase]: 192/718 cut-off events. [2023-08-24 06:55:57,201 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-08-24 06:55:57,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:55:57,202 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:55:57,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:55:57,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:55:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1981543133, now seen corresponding path program 1 times [2023-08-24 06:55:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:55:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278722956] [2023-08-24 06:55:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:55:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:55:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:55:57,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:55:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:55:57,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:55:57,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:55:57,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:55:57,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:55:57,354 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:55:57,355 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:55:57,355 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:55:57,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:55:57,440 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:55:57,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:17,049 INFO L124 PetriNetUnfolderBase]: 11588/42044 cut-off events. [2023-08-24 06:56:17,049 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:56:20,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53408 conditions, 42044 events. 11588/42044 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 481714 event pairs, 7181 based on Foata normal form. 0/37601 useless extension candidates. Maximal degree in co-relation 26569. Up to 11264 conditions per place. [2023-08-24 06:56:20,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:21,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:21,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:56:21,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:21,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:21,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 906 places, 1042 transitions, 2282 flow [2023-08-24 06:56:42,411 INFO L124 PetriNetUnfolderBase]: 11588/42044 cut-off events. [2023-08-24 06:56:42,411 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:56:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53408 conditions, 42044 events. 11588/42044 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 481714 event pairs, 7181 based on Foata normal form. 0/37601 useless extension candidates. Maximal degree in co-relation 26569. Up to 11264 conditions per place. [2023-08-24 06:56:51,412 INFO L119 LiptonReduction]: Number of co-enabled transitions 892320 [2023-08-24 06:57:09,243 INFO L134 LiptonReduction]: Checked pairs total: 2261529 [2023-08-24 06:57:09,243 INFO L136 LiptonReduction]: Total number of compositions: 721 [2023-08-24 06:57:09,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:57:09,245 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:57:09,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:57:09,328 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:57:09,328 INFO L124 PetriNetUnfolderBase]: 221/825 cut-off events. [2023-08-24 06:57:09,328 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-08-24 06:57:09,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:57:09,328 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:57:09,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:57:09,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:57:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1202785309, now seen corresponding path program 1 times [2023-08-24 06:57:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:57:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705583153] [2023-08-24 06:57:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:57:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:57:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:57:09,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:57:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:57:09,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:57:09,406 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:57:09,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:57:09,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:57:09,407 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:57:09,407 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:57:09,407 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:57:09,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:57:09,499 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:57:09,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:57:51,087 INFO L124 PetriNetUnfolderBase]: 24928/84207 cut-off events. [2023-08-24 06:57:51,087 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:58:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108898 conditions, 84207 events. 24928/84207 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 1050961 event pairs, 16398 based on Foata normal form. 0/75638 useless extension candidates. Maximal degree in co-relation 53384. Up to 24576 conditions per place. [2023-08-24 06:58:02,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:58:05,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:58:05,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:58:05,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:58:05,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:58:05,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 975 places, 1122 transitions, 2472 flow [2023-08-24 06:58:48,781 INFO L124 PetriNetUnfolderBase]: 24928/84207 cut-off events. [2023-08-24 06:58:48,781 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:59:00,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108898 conditions, 84207 events. 24928/84207 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 1050961 event pairs, 16398 based on Foata normal form. 0/75638 useless extension candidates. Maximal degree in co-relation 53384. Up to 24576 conditions per place. [2023-08-24 06:59:20,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049256 [2023-08-24 06:59:38,798 INFO L134 LiptonReduction]: Checked pairs total: 2662687 [2023-08-24 06:59:38,799 INFO L136 LiptonReduction]: Total number of compositions: 785 [2023-08-24 06:59:38,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:59:38,800 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;@75220926, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:59:38,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:59:38,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:59:38,908 INFO L124 PetriNetUnfolderBase]: 276/969 cut-off events. [2023-08-24 06:59:38,908 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-24 06:59:38,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:59:38,908 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:59:38,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:59:38,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:59:38,909 INFO L85 PathProgramCache]: Analyzing trace with hash 190019990, now seen corresponding path program 1 times [2023-08-24 06:59:38,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:59:38,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059623386] [2023-08-24 06:59:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:59:38,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:59:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:59:38,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:59:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:59:38,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:59:38,991 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:59:38,991 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:59:38,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:59:38,992 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:59:38,992 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:59:38,992 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:59:38,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:59:39,092 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:59:39,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1044 places, 1202 transitions, 2664 flow