/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 16:26:29,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 16:26:29,584 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 [2023-08-26 16:26:29,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 16:26:29,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 16:26:29,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 16:26:29,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 16:26:29,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 16:26:29,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 16:26:29,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 16:26:29,631 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 16:26:29,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 16:26:29,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 16:26:29,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 16:26:29,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 16:26:29,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 16:26:29,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 16:26:29,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 16:26:29,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 16:26:29,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 16:26:29,634 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 16:26:29,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 16:26:29,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 16:26:29,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 16:26:29,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 16:26:29,635 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 16:26:29,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 16:26:29,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:26:29,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 16:26:29,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 16:26:29,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 16:26:29,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 16:26:29,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 16:26:29,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 16:26:29,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 16:26:29,638 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 16:26:29,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 16:26:29,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 16:26:29,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 16:26:29,949 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 16:26:29,950 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 16:26:29,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-26 16:26:31,168 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 16:26:31,388 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 16:26:31,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-26 16:26:31,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41290193/e599ee5b406542e886d1141dc7eb9e9b/FLAG935637233 [2023-08-26 16:26:31,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41290193/e599ee5b406542e886d1141dc7eb9e9b [2023-08-26 16:26:31,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 16:26:31,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 16:26:31,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 16:26:31,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 16:26:31,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 16:26:31,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc6d84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31, skipping insertion in model container [2023-08-26 16:26:31,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,446 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 16:26:31,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:26:31,600 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 16:26:31,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:26:31,633 INFO L206 MainTranslator]: Completed translation [2023-08-26 16:26:31,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31 WrapperNode [2023-08-26 16:26:31,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 16:26:31,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 16:26:31,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 16:26:31,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 16:26:31,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,666 INFO L138 Inliner]: procedures = 22, calls = 28, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 156 [2023-08-26 16:26:31,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 16:26:31,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 16:26:31,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 16:26:31,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 16:26:31,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 16:26:31,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 16:26:31,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 16:26:31,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 16:26:31,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (1/1) ... [2023-08-26 16:26:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:26:31,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:26:31,722 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) [2023-08-26 16:26:31,728 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 [2023-08-26 16:26:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 16:26:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 16:26:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 16:26:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 16:26:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 16:26:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 16:26:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 16:26:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 16:26:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 16:26:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 16:26:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 16:26:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 16:26:31,754 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 16:26:31,838 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 16:26:31,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 16:26:32,118 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 16:26:32,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 16:26:32,127 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 16:26:32,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:26:32 BoogieIcfgContainer [2023-08-26 16:26:32,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 16:26:32,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 16:26:32,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 16:26:32,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 16:26:32,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:26:31" (1/3) ... [2023-08-26 16:26:32,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2113f37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:26:32, skipping insertion in model container [2023-08-26 16:26:32,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:26:31" (2/3) ... [2023-08-26 16:26:32,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2113f37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:26:32, skipping insertion in model container [2023-08-26 16:26:32,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:26:32" (3/3) ... [2023-08-26 16:26:32,137 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2023-08-26 16:26:32,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 16:26:32,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 16:26:32,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 16:26:32,237 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 16:26:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 194 transitions, 404 flow [2023-08-26 16:26:32,455 INFO L124 PetriNetUnfolderBase]: 11/192 cut-off events. [2023-08-26 16:26:32,456 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 16:26:32,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 192 events. 11/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-08-26 16:26:32,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 194 transitions, 404 flow [2023-08-26 16:26:32,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 183 transitions, 378 flow [2023-08-26 16:26:32,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 16:26:32,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 183 transitions, 378 flow [2023-08-26 16:26:32,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 183 transitions, 378 flow [2023-08-26 16:26:32,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 183 transitions, 378 flow [2023-08-26 16:26:32,552 INFO L124 PetriNetUnfolderBase]: 11/183 cut-off events. [2023-08-26 16:26:32,553 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 16:26:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 11/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-08-26 16:26:32,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 6580 [2023-08-26 16:26:38,728 INFO L134 LiptonReduction]: Checked pairs total: 5983 [2023-08-26 16:26:38,729 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-26 16:26:38,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 16:26:38,746 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;@6f46ea7b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:26:38,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 16:26:38,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:26:38,747 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 16:26:38,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:26:38,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:38,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 16:26:38,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:38,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 783, now seen corresponding path program 1 times [2023-08-26 16:26:38,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:38,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373957787] [2023-08-26 16:26:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:38,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373957787] [2023-08-26 16:26:38,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373957787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:38,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:38,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 16:26:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009787820] [2023-08-26 16:26:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:38,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 16:26:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 16:26:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 16:26:38,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 416 [2023-08-26 16:26:38,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 50 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-26 16:26:38,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:38,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 416 [2023-08-26 16:26:38,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:38,903 INFO L124 PetriNetUnfolderBase]: 21/56 cut-off events. [2023-08-26 16:26:38,903 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-26 16:26:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 56 events. 21/56 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 126 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 84. Up to 57 conditions per place. [2023-08-26 16:26:38,905 INFO L140 encePairwiseOnDemand]: 414/416 looper letters, 17 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 16:26:38,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 80 flow [2023-08-26 16:26:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 16:26:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 16:26:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2023-08-26 16:26:38,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45072115384615385 [2023-08-26 16:26:38,927 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2023-08-26 16:26:38,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2023-08-26 16:26:38,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:38,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2023-08-26 16:26:38,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 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) [2023-08-26 16:26:38,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2023-08-26 16:26:38,944 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2023-08-26 16:26:38,946 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 50 flow. Second operand 2 states and 375 transitions. [2023-08-26 16:26:38,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 80 flow [2023-08-26 16:26:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 16:26:38,951 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 38 flow [2023-08-26 16:26:38,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-26 16:26:38,955 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2023-08-26 16:26:38,956 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 38 flow [2023-08-26 16:26:38,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-26 16:26:38,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:38,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 16:26:38,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 16:26:38,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:38,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 770530, now seen corresponding path program 1 times [2023-08-26 16:26:38,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:38,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843280645] [2023-08-26 16:26:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:39,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:39,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843280645] [2023-08-26 16:26:39,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843280645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:39,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 16:26:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894721394] [2023-08-26 16:26:39,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:39,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:26:39,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:39,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:26:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:26:39,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 416 [2023-08-26 16:26:39,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2023-08-26 16:26:39,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:39,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 416 [2023-08-26 16:26:39,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:39,238 INFO L124 PetriNetUnfolderBase]: 19/50 cut-off events. [2023-08-26 16:26:39,238 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:39,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 50 events. 19/50 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 105 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 103. Up to 50 conditions per place. [2023-08-26 16:26:39,239 INFO L140 encePairwiseOnDemand]: 413/416 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-26 16:26:39,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 64 flow [2023-08-26 16:26:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:26:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:26:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-26 16:26:39,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40064102564102566 [2023-08-26 16:26:39,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-26 16:26:39,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-26 16:26:39,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:39,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-26 16:26:39,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2023-08-26 16:26:39,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,250 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 38 flow. Second operand 3 states and 500 transitions. [2023-08-26 16:26:39,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 64 flow [2023-08-26 16:26:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 16:26:39,251 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 36 flow [2023-08-26 16:26:39,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-26 16:26:39,252 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2023-08-26 16:26:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 36 flow [2023-08-26 16:26:39,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2023-08-26 16:26:39,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 16:26:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 16:26:39,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:39,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash 770531, now seen corresponding path program 1 times [2023-08-26 16:26:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:39,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051770601] [2023-08-26 16:26:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:39,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051770601] [2023-08-26 16:26:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051770601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:39,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:39,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 16:26:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777338498] [2023-08-26 16:26:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:26:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:26:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:26:39,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 416 [2023-08-26 16:26:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-26 16:26:39,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:39,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 416 [2023-08-26 16:26:39,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:39,372 INFO L124 PetriNetUnfolderBase]: 17/44 cut-off events. [2023-08-26 16:26:39,372 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:39,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 44 events. 17/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 87 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 92. Up to 44 conditions per place. [2023-08-26 16:26:39,372 INFO L140 encePairwiseOnDemand]: 413/416 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-26 16:26:39,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 58 flow [2023-08-26 16:26:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:26:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:26:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-08-26 16:26:39,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2023-08-26 16:26:39,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-08-26 16:26:39,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-08-26 16:26:39,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:39,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-08-26 16:26:39,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-08-26 16:26:39,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,379 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 36 flow. Second operand 3 states and 492 transitions. [2023-08-26 16:26:39,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 58 flow [2023-08-26 16:26:39,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:26:39,380 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 33 flow [2023-08-26 16:26:39,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-26 16:26:39,381 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2023-08-26 16:26:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 33 flow [2023-08-26 16:26:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-26 16:26:39,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:39,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 16:26:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 16:26:39,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:39,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 740495522, now seen corresponding path program 1 times [2023-08-26 16:26:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781414237] [2023-08-26 16:26:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:39,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781414237] [2023-08-26 16:26:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781414237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:39,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 16:26:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571725476] [2023-08-26 16:26:39,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:39,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:26:39,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:26:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:26:39,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 416 [2023-08-26 16:26:39,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-08-26 16:26:39,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 416 [2023-08-26 16:26:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:39,552 INFO L124 PetriNetUnfolderBase]: 13/36 cut-off events. [2023-08-26 16:26:39,552 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:39,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 13/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 77. Up to 36 conditions per place. [2023-08-26 16:26:39,554 INFO L140 encePairwiseOnDemand]: 414/416 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-26 16:26:39,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 55 flow [2023-08-26 16:26:39,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:26:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:26:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-26 16:26:39,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2023-08-26 16:26:39,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-26 16:26:39,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-26 16:26:39,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:39,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-26 16:26:39,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2023-08-26 16:26:39,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,561 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 33 flow. Second operand 3 states and 496 transitions. [2023-08-26 16:26:39,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 55 flow [2023-08-26 16:26:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:26:39,562 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 32 flow [2023-08-26 16:26:39,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-26 16:26:39,564 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2023-08-26 16:26:39,564 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 32 flow [2023-08-26 16:26:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-08-26 16:26:39,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:39,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 16:26:39,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 16:26:39,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:39,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash 740495521, now seen corresponding path program 1 times [2023-08-26 16:26:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:39,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856659521] [2023-08-26 16:26:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:39,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856659521] [2023-08-26 16:26:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856659521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 16:26:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109476990] [2023-08-26 16:26:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 16:26:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 16:26:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 16:26:39,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 416 [2023-08-26 16:26:39,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 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) [2023-08-26 16:26:39,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:39,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 416 [2023-08-26 16:26:39,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:39,690 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-26 16:26:39,691 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:39,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 62. Up to 28 conditions per place. [2023-08-26 16:26:39,691 INFO L140 encePairwiseOnDemand]: 414/416 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-26 16:26:39,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 52 flow [2023-08-26 16:26:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:26:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:26:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-26 16:26:39,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2023-08-26 16:26:39,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-26 16:26:39,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-26 16:26:39,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:39,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-26 16:26:39,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-26 16:26:39,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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) [2023-08-26 16:26:39,699 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 32 flow. Second operand 3 states and 480 transitions. [2023-08-26 16:26:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 52 flow [2023-08-26 16:26:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 51 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:26:39,700 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 31 flow [2023-08-26 16:26:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-08-26 16:26:39,701 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2023-08-26 16:26:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 31 flow [2023-08-26 16:26:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 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) [2023-08-26 16:26:39,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:39,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:26:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 16:26:39,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:39,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1720840832, now seen corresponding path program 1 times [2023-08-26 16:26:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880608162] [2023-08-26 16:26:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:40,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880608162] [2023-08-26 16:26:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880608162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:40,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:40,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:26:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052146487] [2023-08-26 16:26:40,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 16:26:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 16:26:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 16:26:40,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 416 [2023-08-26 16:26:40,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-26 16:26:40,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:40,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 416 [2023-08-26 16:26:40,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:40,370 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-08-26 16:26:40,370 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:40,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 32 events. 8/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 71. Up to 16 conditions per place. [2023-08-26 16:26:40,371 INFO L140 encePairwiseOnDemand]: 412/416 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2023-08-26 16:26:40,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 96 flow [2023-08-26 16:26:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 16:26:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 16:26:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 797 transitions. [2023-08-26 16:26:40,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38317307692307695 [2023-08-26 16:26:40,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 797 transitions. [2023-08-26 16:26:40,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 797 transitions. [2023-08-26 16:26:40,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:40,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 797 transitions. [2023-08-26 16:26:40,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 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) [2023-08-26 16:26:40,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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) [2023-08-26 16:26:40,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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) [2023-08-26 16:26:40,381 INFO L175 Difference]: Start difference. First operand has 20 places, 11 transitions, 31 flow. Second operand 5 states and 797 transitions. [2023-08-26 16:26:40,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 96 flow [2023-08-26 16:26:40,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:26:40,382 INFO L231 Difference]: Finished difference. Result has 24 places, 11 transitions, 38 flow [2023-08-26 16:26:40,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2023-08-26 16:26:40,383 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-26 16:26:40,383 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 38 flow [2023-08-26 16:26:40,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-26 16:26:40,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:26:40,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:26:40,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 16:26:40,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 16:26:40,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:26:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash -300510308, now seen corresponding path program 2 times [2023-08-26 16:26:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:26:40,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528151030] [2023-08-26 16:26:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:26:40,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:26:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:26:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 16:26:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:26:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528151030] [2023-08-26 16:26:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528151030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:26:40,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:26:40,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:26:40,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799984828] [2023-08-26 16:26:40,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:26:40,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 16:26:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:26:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 16:26:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 16:26:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 416 [2023-08-26 16:26:40,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-26 16:26:40,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:26:40,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 416 [2023-08-26 16:26:40,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:26:40,887 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-26 16:26:40,887 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 16:26:40,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2023-08-26 16:26:40,887 INFO L140 encePairwiseOnDemand]: 412/416 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-26 16:26:40,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 12 transitions, 62 flow [2023-08-26 16:26:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 16:26:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 16:26:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-08-26 16:26:40,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37884615384615383 [2023-08-26 16:26:40,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-08-26 16:26:40,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-08-26 16:26:40,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:26:40,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-08-26 16:26:40,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 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) [2023-08-26 16:26:40,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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) [2023-08-26 16:26:40,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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) [2023-08-26 16:26:40,896 INFO L175 Difference]: Start difference. First operand has 24 places, 11 transitions, 38 flow. Second operand 5 states and 788 transitions. [2023-08-26 16:26:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 12 transitions, 62 flow [2023-08-26 16:26:40,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 16:26:40,897 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-26 16:26:40,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-26 16:26:40,897 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-26 16:26:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-26 16:26:40,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-26 16:26:40,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-26 16:26:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-26 16:26:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-26 16:26:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-26 16:26:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (2 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-26 16:26:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-26 16:26:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 16:26:40,902 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-26 16:26:40,906 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 16:26:40,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 16:26:40,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:26:40 BasicIcfg [2023-08-26 16:26:40,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 16:26:40,916 INFO L158 Benchmark]: Toolchain (without parser) took 9497.57ms. Allocated memory was 354.4MB in the beginning and 455.1MB in the end (delta: 100.7MB). Free memory was 330.3MB in the beginning and 276.4MB in the end (delta: 53.9MB). Peak memory consumption was 156.1MB. Max. memory is 16.0GB. [2023-08-26 16:26:40,916 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 16:26:40,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.10ms. Allocated memory is still 354.4MB. Free memory was 330.3MB in the beginning and 319.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 16:26:40,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.92ms. Allocated memory is still 354.4MB. Free memory was 319.0MB in the beginning and 316.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 16:26:40,919 INFO L158 Benchmark]: Boogie Preprocessor took 22.80ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 16:26:40,920 INFO L158 Benchmark]: RCFGBuilder took 439.24ms. Allocated memory is still 354.4MB. Free memory was 315.6MB in the beginning and 297.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 16:26:40,921 INFO L158 Benchmark]: TraceAbstraction took 8784.32ms. Allocated memory was 354.4MB in the beginning and 455.1MB in the end (delta: 100.7MB). Free memory was 296.4MB in the beginning and 276.4MB in the end (delta: 20.0MB). Peak memory consumption was 122.6MB. Max. memory is 16.0GB. [2023-08-26 16:26:40,923 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 214.10ms. Allocated memory is still 354.4MB. Free memory was 330.3MB in the beginning and 319.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.92ms. Allocated memory is still 354.4MB. Free memory was 319.0MB in the beginning and 316.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.80ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 439.24ms. Allocated memory is still 354.4MB. Free memory was 315.6MB in the beginning and 297.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 8784.32ms. Allocated memory was 354.4MB in the beginning and 455.1MB in the end (delta: 100.7MB). Free memory was 296.4MB in the beginning and 276.4MB in the end (delta: 20.0MB). Peak memory consumption was 122.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 179 PlacesBefore, 26 PlacesAfterwards, 183 TransitionsBefore, 19 TransitionsAfterwards, 6580 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 31 ConcurrentYvCompositions, 11 ChoiceCompositions, 222 TotalNumberOfCompositions, 5983 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5983, independent: 5983, independent conditional: 0, independent unconditional: 5983, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3895, independent: 3895, independent conditional: 0, independent unconditional: 3895, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5983, independent: 2088, independent conditional: 0, independent unconditional: 2088, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3895, unknown conditional: 0, unknown unconditional: 3895] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 274 locations, 11 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: 8.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 1.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 16:26:40,942 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...