/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/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:13:42,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:13:42,092 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 08:13:42,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:13:42,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:13:42,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:13:42,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:13:42,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:13:42,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:13:42,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:13:42,129 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:13:42,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:13:42,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:13:42,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:13:42,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:13:42,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:13:42,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:13:42,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:13:42,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:13:42,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:13:42,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:13:42,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:13:42,134 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:13:42,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:13:42,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:13:42,136 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:13:42,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:13:42,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:13:42,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:13:42,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:13:42,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:13:42,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:13:42,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:13:42,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:13:42,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:13:42,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:13:42,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:13:42,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:13:42,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:13:42,401 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:13:42,401 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:13:42,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-24 08:13:43,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:13:43,524 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:13:43,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-24 08:13:43,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9241d2c3/7600f309c7cb418eb1be7004fa84a76d/FLAG93082e5fb [2023-08-24 08:13:43,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9241d2c3/7600f309c7cb418eb1be7004fa84a76d [2023-08-24 08:13:43,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:13:43,544 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:13:43,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:13:43,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:13:43,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:13:43,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae9a539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43, skipping insertion in model container [2023-08-24 08:13:43,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,566 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:13:43,677 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-08-24 08:13:43,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:13:43,685 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:13:43,701 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-08-24 08:13:43,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:13:43,711 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:13:43,711 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:13:43,715 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:13:43,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43 WrapperNode [2023-08-24 08:13:43,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:13:43,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:13:43,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:13:43,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:13:43,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,757 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2023-08-24 08:13:43,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:13:43,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:13:43,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:13:43,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:13:43,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:13:43,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:13:43,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:13:43,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:13:43,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (1/1) ... [2023-08-24 08:13:43,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:13:43,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:13:43,818 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 08:13:43,840 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 08:13:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:13:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:13:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:13:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:13:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:13:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 08:13:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 08:13:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 08:13:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:13:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:13:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:13:43,851 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 08:13:43,940 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:13:43,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:13:44,113 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:13:44,174 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:13:44,174 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 08:13:44,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:13:44 BoogieIcfgContainer [2023-08-24 08:13:44,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:13:44,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:13:44,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:13:44,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:13:44,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:13:43" (1/3) ... [2023-08-24 08:13:44,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfbed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:13:44, skipping insertion in model container [2023-08-24 08:13:44,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:13:43" (2/3) ... [2023-08-24 08:13:44,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfbed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:13:44, skipping insertion in model container [2023-08-24 08:13:44,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:13:44" (3/3) ... [2023-08-24 08:13:44,183 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-08-24 08:13:44,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:13:44,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:13:44,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:13:44,248 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 08:13:44,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 368 flow [2023-08-24 08:13:44,314 INFO L124 PetriNetUnfolderBase]: 12/169 cut-off events. [2023-08-24 08:13:44,315 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:13:44,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 169 events. 12/169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-08-24 08:13:44,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 368 flow [2023-08-24 08:13:44,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 159 transitions, 336 flow [2023-08-24 08:13:44,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:13:44,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 159 transitions, 336 flow [2023-08-24 08:13:44,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 159 transitions, 336 flow [2023-08-24 08:13:44,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 336 flow [2023-08-24 08:13:44,356 INFO L124 PetriNetUnfolderBase]: 12/159 cut-off events. [2023-08-24 08:13:44,356 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:13:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 159 events. 12/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-08-24 08:13:44,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 1250 [2023-08-24 08:13:49,339 INFO L134 LiptonReduction]: Checked pairs total: 1957 [2023-08-24 08:13:49,339 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-24 08:13:49,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:13:49,352 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;@1ae87012, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:13:49,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 08:13:49,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:13:49,356 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-08-24 08:13:49,356 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:13:49,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:13:49,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:13:49,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 08:13:49,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:13:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1755034696, now seen corresponding path program 1 times [2023-08-24 08:13:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:13:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021338119] [2023-08-24 08:13:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:13:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:13:49,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:13:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021338119] [2023-08-24 08:13:49,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021338119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:13:49,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:13:49,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:13:49,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366713616] [2023-08-24 08:13:49,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:13:49,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:13:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:13:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:13:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:13:49,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 335 [2023-08-24 08:13:49,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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) [2023-08-24 08:13:49,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:13:49,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 335 [2023-08-24 08:13:49,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:13:49,785 INFO L124 PetriNetUnfolderBase]: 282/438 cut-off events. [2023-08-24 08:13:49,785 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-24 08:13:49,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1316 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-08-24 08:13:49,788 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-24 08:13:49,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-08-24 08:13:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:13:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:13:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-24 08:13:49,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-08-24 08:13:49,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-24 08:13:49,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-24 08:13:49,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:13:49,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-24 08:13:49,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-24 08:13:49,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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) [2023-08-24 08:13:49,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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) [2023-08-24 08:13:49,812 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 600 transitions. [2023-08-24 08:13:49,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-08-24 08:13:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 08:13:49,818 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-08-24 08:13:49,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-24 08:13:49,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-08-24 08:13:49,821 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-08-24 08:13:49,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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) [2023-08-24 08:13:49,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:13:49,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:13:49,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:13:49,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 08:13:49,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:13:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1833042564, now seen corresponding path program 1 times [2023-08-24 08:13:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:13:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370865308] [2023-08-24 08:13:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:13:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:13:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:13:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370865308] [2023-08-24 08:13:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370865308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:13:49,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:13:49,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:13:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690776287] [2023-08-24 08:13:49,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:13:49,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:13:49,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:13:49,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:13:49,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:13:49,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 335 [2023-08-24 08:13:49,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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) [2023-08-24 08:13:49,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:13:49,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 335 [2023-08-24 08:13:49,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:13:50,006 INFO L124 PetriNetUnfolderBase]: 344/532 cut-off events. [2023-08-24 08:13:50,007 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-08-24 08:13:50,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1673 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-08-24 08:13:50,009 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-08-24 08:13:50,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-08-24 08:13:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:13:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:13:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-24 08:13:50,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-08-24 08:13:50,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-24 08:13:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-24 08:13:50,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:13:50,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-24 08:13:50,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-24 08:13:50,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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) [2023-08-24 08:13:50,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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) [2023-08-24 08:13:50,015 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 600 transitions. [2023-08-24 08:13:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-08-24 08:13:50,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 08:13:50,016 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-08-24 08:13:50,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-24 08:13:50,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-08-24 08:13:50,017 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-08-24 08:13:50,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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) [2023-08-24 08:13:50,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:13:50,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:13:50,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:13:50,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 08:13:50,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:13:50,018 INFO L85 PathProgramCache]: Analyzing trace with hash -873477243, now seen corresponding path program 1 times [2023-08-24 08:13:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:13:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074839015] [2023-08-24 08:13:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:13:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 08:13:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:13:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074839015] [2023-08-24 08:13:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074839015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:13:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:13:50,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 08:13:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12677246] [2023-08-24 08:13:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:13:50,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 08:13:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:13:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 08:13:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 08:13:50,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 335 [2023-08-24 08:13:50,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-24 08:13:50,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:13:50,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 335 [2023-08-24 08:13:50,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:13:50,175 INFO L124 PetriNetUnfolderBase]: 344/533 cut-off events. [2023-08-24 08:13:50,175 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-08-24 08:13:50,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1619 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 594. Up to 533 conditions per place. [2023-08-24 08:13:50,177 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-24 08:13:50,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-08-24 08:13:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 08:13:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 08:13:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-24 08:13:50,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228855721393035 [2023-08-24 08:13:50,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-24 08:13:50,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-24 08:13:50,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:13:50,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-24 08:13:50,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-08-24 08:13:50,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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) [2023-08-24 08:13:50,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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) [2023-08-24 08:13:50,182 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 425 transitions. [2023-08-24 08:13:50,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-08-24 08:13:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 08:13:50,183 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-08-24 08:13:50,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 08:13:50,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-24 08:13:50,183 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-08-24 08:13:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-24 08:13:50,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:13:50,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:13:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 08:13:50,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 08:13:50,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:13:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 700259226, now seen corresponding path program 1 times [2023-08-24 08:13:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:13:50,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42077737] [2023-08-24 08:13:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:50,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:13:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:13:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:13:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42077737] [2023-08-24 08:13:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42077737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:13:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545011380] [2023-08-24 08:13:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:50,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:13:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:13:50,564 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) [2023-08-24 08:13:50,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 08:13:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:50,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 08:13:50,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:13:50,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:13:50,798 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:13:50,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:13:50,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 08:13:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:13:50,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-24 08:13:50,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-24 08:13:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:13:50,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:13:51,150 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (or (forall ((v_ArrVal_109 (Array Int Int))) (<= .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_109) c_~A~0.base) c_~A~0.offset))) (<= c_~min~0 .cse0)) (forall ((v_ArrVal_109 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_109) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse1) (< .cse1 .cse0)))))) is different from false [2023-08-24 08:13:57,257 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:13:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:13:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545011380] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:13:57,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:13:57,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 25 [2023-08-24 08:13:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509069141] [2023-08-24 08:13:57,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:13:57,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 08:13:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:13:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 08:13:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=490, Unknown=3, NotChecked=46, Total=650 [2023-08-24 08:13:57,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 335 [2023-08-24 08:13:57,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 26 states, 26 states have (on average 101.76923076923077) internal successors, (2646), 26 states have internal predecessors, (2646), 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) [2023-08-24 08:13:57,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:13:57,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 335 [2023-08-24 08:13:57,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:13:58,359 INFO L124 PetriNetUnfolderBase]: 634/984 cut-off events. [2023-08-24 08:13:58,359 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-24 08:13:58,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 984 events. 634/984 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3787 event pairs, 99 based on Foata normal form. 3/826 useless extension candidates. Maximal degree in co-relation 2433. Up to 219 conditions per place. [2023-08-24 08:13:58,361 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-24 08:13:58,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 149 transitions, 730 flow [2023-08-24 08:13:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 08:13:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 08:13:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1932 transitions. [2023-08-24 08:13:58,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32039800995024875 [2023-08-24 08:13:58,365 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1932 transitions. [2023-08-24 08:13:58,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1932 transitions. [2023-08-24 08:13:58,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:13:58,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1932 transitions. [2023-08-24 08:13:58,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.33333333333333) internal successors, (1932), 18 states have internal predecessors, (1932), 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) [2023-08-24 08:13:58,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 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) [2023-08-24 08:13:58,375 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 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) [2023-08-24 08:13:58,375 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 18 states and 1932 transitions. [2023-08-24 08:13:58,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 149 transitions, 730 flow [2023-08-24 08:13:58,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 149 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 08:13:58,377 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-24 08:13:58,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-24 08:13:58,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2023-08-24 08:13:58,378 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-24 08:13:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 101.76923076923077) internal successors, (2646), 26 states have internal predecessors, (2646), 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) [2023-08-24 08:13:58,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 08:13:58,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 08:13:58,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 08:13:58,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 08:13:58,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 08:13:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:13:58,587 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 08:13:58,590 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:13:58,590 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:13:58,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:13:58 BasicIcfg [2023-08-24 08:13:58,592 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:13:58,592 INFO L158 Benchmark]: Toolchain (without parser) took 15048.52ms. Allocated memory was 375.4MB in the beginning and 616.6MB in the end (delta: 241.2MB). Free memory was 351.0MB in the beginning and 424.3MB in the end (delta: -73.4MB). Peak memory consumption was 167.6MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,592 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory was 353.3MB in the beginning and 353.3MB in the end (delta: 82.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:13:58,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.28ms. Allocated memory is still 375.4MB. Free memory was 350.8MB in the beginning and 338.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.28ms. Allocated memory is still 375.4MB. Free memory was 338.8MB in the beginning and 336.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,594 INFO L158 Benchmark]: Boogie Preprocessor took 31.51ms. Allocated memory is still 375.4MB. Free memory was 336.7MB in the beginning and 335.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,594 INFO L158 Benchmark]: RCFGBuilder took 385.04ms. Allocated memory is still 375.4MB. Free memory was 335.1MB in the beginning and 313.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,594 INFO L158 Benchmark]: TraceAbstraction took 14415.00ms. Allocated memory was 375.4MB in the beginning and 616.6MB in the end (delta: 241.2MB). Free memory was 312.1MB in the beginning and 424.3MB in the end (delta: -112.3MB). Peak memory consumption was 127.8MB. Max. memory is 16.0GB. [2023-08-24 08:13:58,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory was 353.3MB in the beginning and 353.3MB in the end (delta: 82.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 171.28ms. Allocated memory is still 375.4MB. Free memory was 350.8MB in the beginning and 338.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.28ms. Allocated memory is still 375.4MB. Free memory was 338.8MB in the beginning and 336.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.51ms. Allocated memory is still 375.4MB. Free memory was 336.7MB in the beginning and 335.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 385.04ms. Allocated memory is still 375.4MB. Free memory was 335.1MB in the beginning and 313.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 14415.00ms. Allocated memory was 375.4MB in the beginning and 616.6MB in the end (delta: 241.2MB). Free memory was 312.1MB in the beginning and 424.3MB in the end (delta: -112.3MB). Peak memory consumption was 127.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 157 PlacesBefore, 31 PlacesAfterwards, 159 TransitionsBefore, 24 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 8 FixpointIterations, 94 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 163 TotalNumberOfCompositions, 1957 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1466, independent: 1402, independent conditional: 0, independent unconditional: 1402, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 666, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1466, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 666, unknown conditional: 0, unknown unconditional: 666] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 192 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 133 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 731 IncrementalHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 0 mSDtfsCounter, 731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 132 ConstructedInterpolants, 4 QuantifiedInterpolants, 1150 SizeOfPredicates, 22 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 08:13:58,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...