/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-1.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:02:04,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:02:04,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:02:04,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:02:04,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:02:04,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:02:04,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:02:04,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:02:04,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:02:04,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:02:04,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:02:04,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:02:04,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:02:04,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:02:04,275 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:02:04,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:02:04,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:02:04,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:02:04,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:02:04,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:02:04,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:02:04,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:02:04,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:02:04,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:02:04,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:02:04,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:02:04,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:02:04,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:02:04,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:02:04,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:02:04,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:02:04,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:02:04,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:02:04,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:02:04,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:02:04,283 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:02:04,286 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:02:04,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:02:04,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:02:04,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:02:04,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:02:04,442 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:02:04,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-1.wvr_bound2.c [2023-08-03 20:02:05,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:02:05,456 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:02:05,456 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-1.wvr_bound2.c [2023-08-03 20:02:05,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f72cdaae/2a55a8b343844c1c9272f21be73ddc93/FLAGc81fc2ba0 [2023-08-03 20:02:05,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f72cdaae/2a55a8b343844c1c9272f21be73ddc93 [2023-08-03 20:02:05,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:02:05,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:02:05,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:02:05,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:02:05,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:02:05,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5323ad17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05, skipping insertion in model container [2023-08-03 20:02:05,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,508 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:02:05,608 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-1.wvr_bound2.c[2917,2930] [2023-08-03 20:02:05,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:02:05,619 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:02:05,636 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-1.wvr_bound2.c[2917,2930] [2023-08-03 20:02:05,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:02:05,648 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:02:05,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05 WrapperNode [2023-08-03 20:02:05,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:02:05,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:02:05,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:02:05,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:02:05,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,683 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 319 [2023-08-03 20:02:05,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:02:05,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:02:05,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:02:05,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:02:05,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:02:05,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:02:05,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:02:05,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:02:05,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (1/1) ... [2023-08-03 20:02:05,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:02:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:02:05,734 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) [2023-08-03 20:02:05,752 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 [2023-08-03 20:02:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:02:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:02:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:02:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:02:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:02:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:02:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:02:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:02:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:02:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:02:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:02:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:02:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:02:05,765 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 20:02:05,840 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:02:05,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:02:06,119 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:02:06,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:02:06,127 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-03 20:02:06,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:02:06 BoogieIcfgContainer [2023-08-03 20:02:06,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:02:06,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:02:06,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:02:06,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:02:06,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:02:05" (1/3) ... [2023-08-03 20:02:06,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654e23b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:02:06, skipping insertion in model container [2023-08-03 20:02:06,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:02:05" (2/3) ... [2023-08-03 20:02:06,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654e23b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:02:06, skipping insertion in model container [2023-08-03 20:02:06,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:02:06" (3/3) ... [2023-08-03 20:02:06,134 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-misc-1.wvr_bound2.c [2023-08-03 20:02:06,139 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:02:06,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:02:06,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:02:06,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:02:06,257 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 20:02:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,396 INFO L124 PetriNetUnfolderBase]: 64/612 cut-off events. [2023-08-03 20:02:06,396 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-03 20:02:06,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 612 events. 64/612 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2650 event pairs, 0 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-08-03 20:02:06,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:02:06,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 376 transitions, 774 flow [2023-08-03 20:02:06,493 INFO L124 PetriNetUnfolderBase]: 64/612 cut-off events. [2023-08-03 20:02:06,493 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-03 20:02:06,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 612 events. 64/612 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2650 event pairs, 0 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-08-03 20:02:06,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 45792 [2023-08-03 20:02:14,792 INFO L134 LiptonReduction]: Checked pairs total: 45312 [2023-08-03 20:02:14,792 INFO L136 LiptonReduction]: Total number of compositions: 435 [2023-08-03 20:02:14,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:02:14,805 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=true, 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;@2d48c3c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:02:14,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:02:14,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:02:14,810 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-08-03 20:02:14,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:02:14,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:14,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 20:02:14,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:02:14,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:14,814 INFO L85 PathProgramCache]: Analyzing trace with hash -362029129, now seen corresponding path program 1 times [2023-08-03 20:02:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:14,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174480433] [2023-08-03 20:02:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:14,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:02:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174480433] [2023-08-03 20:02:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174480433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:14,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:14,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:02:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019698547] [2023-08-03 20:02:14,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:14,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:02:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:02:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:02:14,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 811 [2023-08-03 20:02:15,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:15,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:15,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 811 [2023-08-03 20:02:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:02:15,139 INFO L124 PetriNetUnfolderBase]: 416/663 cut-off events. [2023-08-03 20:02:15,139 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 20:02:15,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 663 events. 416/663 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2418 event pairs, 105 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 1144. Up to 623 conditions per place. [2023-08-03 20:02:15,143 INFO L140 encePairwiseOnDemand]: 806/811 looper letters, 35 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 20:02:15,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 178 flow [2023-08-03 20:02:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:02:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:02:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1054 transitions. [2023-08-03 20:02:15,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332100287710645 [2023-08-03 20:02:15,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1054 transitions. [2023-08-03 20:02:15,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1054 transitions. [2023-08-03 20:02:15,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:02:15,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1054 transitions. [2023-08-03 20:02:15,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:15,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 811.0) internal successors, (3244), 4 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:15,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 811.0) internal successors, (3244), 4 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:15,178 INFO L175 Difference]: Start difference. First operand has 32 places, 37 transitions, 96 flow. Second operand 3 states and 1054 transitions. [2023-08-03 20:02:15,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 178 flow [2023-08-03 20:02:15,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:02:15,184 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 100 flow [2023-08-03 20:02:15,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=811, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-08-03 20:02:15,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-03 20:02:15,188 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 100 flow [2023-08-03 20:02:15,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:15,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:15,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 20:02:15,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:02:15,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:02:15,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1740771439, now seen corresponding path program 1 times [2023-08-03 20:02:15,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:15,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042919492] [2023-08-03 20:02:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:15,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:02:15,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:02:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:02:15,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:02:15,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:02:15,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 20:02:15,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 20:02:15,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:02:15,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:02:15,315 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:02:15,318 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:02:15,318 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:02:15,370 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 20:02:15,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,659 INFO L124 PetriNetUnfolderBase]: 210/1667 cut-off events. [2023-08-03 20:02:15,659 INFO L125 PetriNetUnfolderBase]: For 72/113 co-relation queries the response was YES. [2023-08-03 20:02:15,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 1667 events. 210/1667 cut-off events. For 72/113 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11437 event pairs, 1 based on Foata normal form. 0/1445 useless extension candidates. Maximal degree in co-relation 1040. Up to 32 conditions per place. [2023-08-03 20:02:15,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,716 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:02:15,716 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 594 transitions, 1236 flow [2023-08-03 20:02:15,986 INFO L124 PetriNetUnfolderBase]: 210/1667 cut-off events. [2023-08-03 20:02:15,986 INFO L125 PetriNetUnfolderBase]: For 72/113 co-relation queries the response was YES. [2023-08-03 20:02:16,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 1667 events. 210/1667 cut-off events. For 72/113 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11437 event pairs, 1 based on Foata normal form. 0/1445 useless extension candidates. Maximal degree in co-relation 1040. Up to 32 conditions per place. [2023-08-03 20:02:16,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 185712 [2023-08-03 20:02:25,222 INFO L134 LiptonReduction]: Checked pairs total: 296771 [2023-08-03 20:02:25,222 INFO L136 LiptonReduction]: Total number of compositions: 664 [2023-08-03 20:02:25,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:02:25,229 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=true, 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;@2d48c3c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:02:25,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:02:25,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:02:25,231 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-08-03 20:02:25,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:02:25,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:25,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 20:02:25,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:02:25,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 156208164, now seen corresponding path program 1 times [2023-08-03 20:02:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539938304] [2023-08-03 20:02:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:02:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539938304] [2023-08-03 20:02:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539938304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:25,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:25,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:02:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568523834] [2023-08-03 20:02:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:02:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:02:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:02:25,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 1258 [2023-08-03 20:02:25,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 534.0) internal successors, (1602), 3 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:25,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:25,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 1258 [2023-08-03 20:02:25,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:03:18,096 INFO L124 PetriNetUnfolderBase]: 709167/905381 cut-off events. [2023-08-03 20:03:18,097 INFO L125 PetriNetUnfolderBase]: For 40607/40607 co-relation queries the response was YES. [2023-08-03 20:03:19,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801286 conditions, 905381 events. 709167/905381 cut-off events. For 40607/40607 co-relation queries the response was YES. Maximal size of possible extension queue 29229. Compared 6352136 event pairs, 560900 based on Foata normal form. 59520/838815 useless extension candidates. Maximal degree in co-relation 1156912. Up to 875294 conditions per place. [2023-08-03 20:03:23,010 INFO L140 encePairwiseOnDemand]: 1248/1258 looper letters, 86 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-03 20:03:23,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 446 flow [2023-08-03 20:03:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:03:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:03:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1693 transitions. [2023-08-03 20:03:23,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485956544780074 [2023-08-03 20:03:23,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1693 transitions. [2023-08-03 20:03:23,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1693 transitions. [2023-08-03 20:03:23,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:03:23,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1693 transitions. [2023-08-03 20:03:23,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.3333333333334) internal successors, (1693), 3 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:03:23,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1258.0) internal successors, (5032), 4 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:03:23,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1258.0) internal successors, (5032), 4 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:03:23,032 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 256 flow. Second operand 3 states and 1693 transitions. [2023-08-03 20:03:23,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 446 flow [2023-08-03 20:03:23,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:03:23,055 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 254 flow [2023-08-03 20:03:23,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1258, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2023-08-03 20:03:23,055 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-08-03 20:03:23,055 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 254 flow [2023-08-03 20:03:23,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.0) internal successors, (1602), 3 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:03:23,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:03:23,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:03:23,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 20:03:23,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:03:23,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:03:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1575701483, now seen corresponding path program 1 times [2023-08-03 20:03:23,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:03:23,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984691365] [2023-08-03 20:03:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:03:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:03:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:03:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:03:23,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:03:23,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984691365] [2023-08-03 20:03:23,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984691365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:03:23,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:03:23,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:03:23,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125129819] [2023-08-03 20:03:23,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:03:23,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:03:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:03:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:03:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:03:23,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 1258 [2023-08-03 20:03:23,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 535.0) internal successors, (1605), 3 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:03:23,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:03:23,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 1258 [2023-08-03 20:03:23,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:04:15,696 INFO L124 PetriNetUnfolderBase]: 706261/907227 cut-off events. [2023-08-03 20:04:15,696 INFO L125 PetriNetUnfolderBase]: For 37439/37439 co-relation queries the response was YES. [2023-08-03 20:04:17,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807136 conditions, 907227 events. 706261/907227 cut-off events. For 37439/37439 co-relation queries the response was YES. Maximal size of possible extension queue 29660. Compared 6483586 event pairs, 436584 based on Foata normal form. 0/779370 useless extension candidates. Maximal degree in co-relation 1240003. Up to 869741 conditions per place. [2023-08-03 20:04:20,752 INFO L140 encePairwiseOnDemand]: 1255/1258 looper letters, 110 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2023-08-03 20:04:20,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 552 flow [2023-08-03 20:04:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:04:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:04:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1708 transitions. [2023-08-03 20:04:20,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257021727609964 [2023-08-03 20:04:20,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1708 transitions. [2023-08-03 20:04:20,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1708 transitions. [2023-08-03 20:04:20,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:04:20,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1708 transitions. [2023-08-03 20:04:20,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:20,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1258.0) internal successors, (5032), 4 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:20,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1258.0) internal successors, (5032), 4 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:20,769 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 254 flow. Second operand 3 states and 1708 transitions. [2023-08-03 20:04:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 552 flow [2023-08-03 20:04:20,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 135 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:04:20,784 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 264 flow [2023-08-03 20:04:20,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1258, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2023-08-03 20:04:20,785 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-08-03 20:04:20,785 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 264 flow [2023-08-03 20:04:20,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 535.0) internal successors, (1605), 3 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:20,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:04:20,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 20:04:20,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 20:04:20,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:04:20,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:04:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1822076194, now seen corresponding path program 1 times [2023-08-03 20:04:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:04:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72382157] [2023-08-03 20:04:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:04:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:04:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:04:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:04:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:04:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72382157] [2023-08-03 20:04:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72382157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:04:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121493404] [2023-08-03 20:04:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:04:20,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:04:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:04:20,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:04:20,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:04:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:04:20,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:04:20,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:04:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:04:20,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:04:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121493404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:04:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:04:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:04:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133630419] [2023-08-03 20:04:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:04:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:04:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:04:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:04:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:04:20,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 1258 [2023-08-03 20:04:20,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 532.8) internal successors, (2664), 5 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:20,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:04:20,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 1258 [2023-08-03 20:04:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand