/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 -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/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:27:20,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:27:20,440 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 12:27:20,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:27:20,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:27:20,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:27:20,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:27:20,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:27:20,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:27:20,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:27:20,476 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:27:20,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:27:20,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:27:20,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:27:20,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:27:20,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:27:20,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:27:20,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:27:20,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:27:20,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:27:20,480 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:27:20,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:27:20,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:27:20,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:27:20,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:27:20,481 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:27:20,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:27:20,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:20,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:27:20,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:27:20,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:27:20,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:27:20,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:27:20,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:27:20,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:27:20,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:27:20,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:27:20,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:27:20,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:27:20,792 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:27:20,792 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:27:20,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-08-26 12:27:21,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:27:22,238 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:27:22,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-08-26 12:27:22,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ba4911b/a99b2b8d096a483cba6f5fa759066550/FLAGece1b9424 [2023-08-26 12:27:22,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ba4911b/a99b2b8d096a483cba6f5fa759066550 [2023-08-26 12:27:22,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:27:22,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:27:22,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:22,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:27:22,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:27:22,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dd5eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22, skipping insertion in model container [2023-08-26 12:27:22,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:27:22,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:22,614 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:27:22,645 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:27:22,647 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:27:22,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:22,716 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:27:22,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22 WrapperNode [2023-08-26 12:27:22,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:22,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:22,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:27:22,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:27:22,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,777 INFO L138 Inliner]: procedures = 162, calls = 32, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 64 [2023-08-26 12:27:22,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:22,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:27:22,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:27:22,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:27:22,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:27:22,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:27:22,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:27:22,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:27:22,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (1/1) ... [2023-08-26 12:27:22,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:27:22,835 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 12:27:22,848 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 12:27:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:27:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:27:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:27:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:27:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:27:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:27:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:27:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:27:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:27:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:27:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:27:22,877 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 12:27:23,015 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:27:23,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:27:23,179 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:27:23,185 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:27:23,185 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:27:23,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:23 BoogieIcfgContainer [2023-08-26 12:27:23,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:27:23,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:27:23,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:27:23,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:27:23,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:27:22" (1/3) ... [2023-08-26 12:27:23,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b603ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:23, skipping insertion in model container [2023-08-26 12:27:23,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:22" (2/3) ... [2023-08-26 12:27:23,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b603ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:23, skipping insertion in model container [2023-08-26 12:27:23,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:23" (3/3) ... [2023-08-26 12:27:23,194 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2023-08-26 12:27:23,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:27:23,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 12:27:23,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:27:23,257 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:27:23,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 184 flow [2023-08-26 12:27:23,349 INFO L124 PetriNetUnfolderBase]: 4/87 cut-off events. [2023-08-26 12:27:23,349 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:27:23,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 4/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-08-26 12:27:23,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 88 transitions, 184 flow [2023-08-26 12:27:23,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 79 transitions, 161 flow [2023-08-26 12:27:23,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:27:23,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 79 transitions, 161 flow [2023-08-26 12:27:23,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 79 transitions, 161 flow [2023-08-26 12:27:23,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 161 flow [2023-08-26 12:27:23,390 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2023-08-26 12:27:23,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:23,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 4/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-08-26 12:27:23,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 616 [2023-08-26 12:27:26,395 INFO L134 LiptonReduction]: Checked pairs total: 2346 [2023-08-26 12:27:26,396 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-26 12:27:26,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:27:26,415 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;@7737487, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:27:26,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 12:27:26,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:27:26,417 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:27:26,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:26,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:26,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:27:26,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:26,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 317, now seen corresponding path program 1 times [2023-08-26 12:27:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054545011] [2023-08-26 12:27:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:26,505 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 12:27:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054545011] [2023-08-26 12:27:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054545011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:26,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:27:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345801132] [2023-08-26 12:27:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:26,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:27:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:27:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:27:26,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 167 [2023-08-26 12:27:26,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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 12:27:26,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:26,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 167 [2023-08-26 12:27:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:26,576 INFO L124 PetriNetUnfolderBase]: 32/86 cut-off events. [2023-08-26 12:27:26,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:26,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 86 events. 32/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 296 event pairs, 32 based on Foata normal form. 5/68 useless extension candidates. Maximal degree in co-relation 160. Up to 79 conditions per place. [2023-08-26 12:27:26,578 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 13 selfloop transitions, 0 changer transitions 1/18 dead transitions. [2023-08-26 12:27:26,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 67 flow [2023-08-26 12:27:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:27:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:27:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 179 transitions. [2023-08-26 12:27:26,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359281437125748 [2023-08-26 12:27:26,594 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 179 transitions. [2023-08-26 12:27:26,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 179 transitions. [2023-08-26 12:27:26,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:26,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 179 transitions. [2023-08-26 12:27:26,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 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 12:27:26,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 12:27:26,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 12:27:26,612 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 51 flow. Second operand 2 states and 179 transitions. [2023-08-26 12:27:26,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 67 flow [2023-08-26 12:27:26,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:26,616 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 36 flow [2023-08-26 12:27:26,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-26 12:27:26,623 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-08-26 12:27:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 36 flow [2023-08-26 12:27:26,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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 12:27:26,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:26,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:27:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:27:26,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:26,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash 302007302, now seen corresponding path program 1 times [2023-08-26 12:27:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:26,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578832934] [2023-08-26 12:27:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:26,837 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 12:27:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578832934] [2023-08-26 12:27:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578832934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053844957] [2023-08-26 12:27:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:26,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:26,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-08-26 12:27:26,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 12:27:26,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:26,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-08-26 12:27:26,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:26,902 INFO L124 PetriNetUnfolderBase]: 37/102 cut-off events. [2023-08-26 12:27:26,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:26,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 102 events. 37/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 25 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 195. Up to 62 conditions per place. [2023-08-26 12:27:26,903 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 18 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-26 12:27:26,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 23 transitions, 90 flow [2023-08-26 12:27:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-26 12:27:26,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930139720558882 [2023-08-26 12:27:26,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-26 12:27:26,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-26 12:27:26,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:26,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-26 12:27:26,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 12:27:26,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:26,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:26,914 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 36 flow. Second operand 3 states and 247 transitions. [2023-08-26 12:27:26,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 23 transitions, 90 flow [2023-08-26 12:27:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:27:26,915 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 47 flow [2023-08-26 12:27:26,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-08-26 12:27:26,916 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-26 12:27:26,916 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 47 flow [2023-08-26 12:27:26,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 12:27:26,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:26,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:26,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:27:26,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:26,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1828783361, now seen corresponding path program 1 times [2023-08-26 12:27:26,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588784824] [2023-08-26 12:27:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:26,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:27,026 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 12:27:27,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:27,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588784824] [2023-08-26 12:27:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588784824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:27,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47655725] [2023-08-26 12:27:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-08-26 12:27:27,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 12:27:27,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:27,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-08-26 12:27:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:27,056 INFO L124 PetriNetUnfolderBase]: 21/65 cut-off events. [2023-08-26 12:27:27,056 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2023-08-26 12:27:27,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 65 events. 21/65 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 21 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 132. Up to 55 conditions per place. [2023-08-26 12:27:27,057 INFO L140 encePairwiseOnDemand]: 165/167 looper letters, 11 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-26 12:27:27,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 69 flow [2023-08-26 12:27:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-26 12:27:27,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151696606786427 [2023-08-26 12:27:27,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-26 12:27:27,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-26 12:27:27,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:27,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-26 12:27:27,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 12:27:27,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,063 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 47 flow. Second operand 3 states and 208 transitions. [2023-08-26 12:27:27,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 69 flow [2023-08-26 12:27:27,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 16 transitions, 63 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:27,064 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 41 flow [2023-08-26 12:27:27,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-26 12:27:27,065 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-08-26 12:27:27,065 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 41 flow [2023-08-26 12:27:27,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 12:27:27,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:27,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:27,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:27:27,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:27,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1828783360, now seen corresponding path program 1 times [2023-08-26 12:27:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:27,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669721011] [2023-08-26 12:27:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:27,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:27,126 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 12:27:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669721011] [2023-08-26 12:27:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669721011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:27,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:27,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585987895] [2023-08-26 12:27:27,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:27,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 167 [2023-08-26 12:27:27,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 12:27:27,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:27,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 167 [2023-08-26 12:27:27,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:27,153 INFO L124 PetriNetUnfolderBase]: 17/56 cut-off events. [2023-08-26 12:27:27,153 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-26 12:27:27,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 56 events. 17/56 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 17 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 109. Up to 46 conditions per place. [2023-08-26 12:27:27,154 INFO L140 encePairwiseOnDemand]: 165/167 looper letters, 8 selfloop transitions, 1 changer transitions 2/15 dead transitions. [2023-08-26 12:27:27,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 15 transitions, 61 flow [2023-08-26 12:27:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-08-26 12:27:27,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-08-26 12:27:27,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-08-26 12:27:27,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-08-26 12:27:27,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:27,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-08-26 12:27:27,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 12:27:27,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,158 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 41 flow. Second operand 3 states and 210 transitions. [2023-08-26 12:27:27,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 15 transitions, 61 flow [2023-08-26 12:27:27,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:27,159 INFO L231 Difference]: Finished difference. Result has 23 places, 13 transitions, 36 flow [2023-08-26 12:27:27,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=23, PETRI_TRANSITIONS=13} [2023-08-26 12:27:27,160 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-08-26 12:27:27,160 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 36 flow [2023-08-26 12:27:27,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 12:27:27,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:27,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:27,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:27:27,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:27,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1630667992, now seen corresponding path program 1 times [2023-08-26 12:27:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172354390] [2023-08-26 12:27:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:27,218 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 12:27:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172354390] [2023-08-26 12:27:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172354390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:27,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087373615] [2023-08-26 12:27:27,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:27,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:27,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 167 [2023-08-26 12:27:27,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 12:27:27,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:27,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 167 [2023-08-26 12:27:27,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:27,253 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2023-08-26 12:27:27,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:27,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 26 events. 3/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 7/33 useless extension candidates. Maximal degree in co-relation 56. Up to 15 conditions per place. [2023-08-26 12:27:27,255 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 5 selfloop transitions, 3 changer transitions 7/16 dead transitions. [2023-08-26 12:27:27,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 70 flow [2023-08-26 12:27:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-26 12:27:27,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171656686626746 [2023-08-26 12:27:27,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-26 12:27:27,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-26 12:27:27,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:27,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-26 12:27:27,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 12:27:27,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:27:27,265 INFO L175 Difference]: Start difference. First operand has 23 places, 13 transitions, 36 flow. Second operand 3 states and 209 transitions. [2023-08-26 12:27:27,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 70 flow [2023-08-26 12:27:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:27,266 INFO L231 Difference]: Finished difference. Result has 22 places, 9 transitions, 32 flow [2023-08-26 12:27:27,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=22, PETRI_TRANSITIONS=9} [2023-08-26 12:27:27,267 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-08-26 12:27:27,267 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 9 transitions, 32 flow [2023-08-26 12:27:27,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 12:27:27,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:27,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:27,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:27:27,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:27:27,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash 685264690, now seen corresponding path program 1 times [2023-08-26 12:27:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:27,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436290302] [2023-08-26 12:27:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:27,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:27,503 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 12:27:27,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436290302] [2023-08-26 12:27:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436290302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:27:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928418157] [2023-08-26 12:27:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:27,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:27:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:27:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:27:27,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 167 [2023-08-26 12:27:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 9 transitions, 32 flow. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 12:27:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:27,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 167 [2023-08-26 12:27:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:27,523 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-26 12:27:27,523 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 12:27:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 11 events. 1/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 3/14 useless extension candidates. Maximal degree in co-relation 31. Up to 7 conditions per place. [2023-08-26 12:27:27,523 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-08-26 12:27:27,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 9 transitions, 48 flow [2023-08-26 12:27:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2023-08-26 12:27:27,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36227544910179643 [2023-08-26 12:27:27,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 242 transitions. [2023-08-26 12:27:27,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 242 transitions. [2023-08-26 12:27:27,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:27,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 242 transitions. [2023-08-26 12:27:27,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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 12:27:27,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 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 12:27:27,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 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 12:27:27,527 INFO L175 Difference]: Start difference. First operand has 22 places, 9 transitions, 32 flow. Second operand 4 states and 242 transitions. [2023-08-26 12:27:27,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 9 transitions, 48 flow [2023-08-26 12:27:27,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:27,528 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-26 12:27:27,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-26 12:27:27,529 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -8 predicate places. [2023-08-26 12:27:27,529 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-26 12:27:27,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 12:27:27,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2023-08-26 12:27:27,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 12:27:27,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 12:27:27,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (3 of 7 remaining) [2023-08-26 12:27:27,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2023-08-26 12:27:27,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2023-08-26 12:27:27,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-26 12:27:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:27:27,533 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 12:27:27,536 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:27:27,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:27:27,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:27:27 BasicIcfg [2023-08-26 12:27:27,539 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:27:27,540 INFO L158 Benchmark]: Toolchain (without parser) took 5268.69ms. Allocated memory was 383.8MB in the beginning and 467.7MB in the end (delta: 83.9MB). Free memory was 359.5MB in the beginning and 430.2MB in the end (delta: -70.7MB). Peak memory consumption was 16.3MB. Max. memory is 16.0GB. [2023-08-26 12:27:27,540 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 361.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:27,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.15ms. Allocated memory is still 383.8MB. Free memory was 359.0MB in the beginning and 340.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:27:27,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.21ms. Allocated memory is still 383.8MB. Free memory was 340.1MB in the beginning and 338.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:27:27,541 INFO L158 Benchmark]: Boogie Preprocessor took 28.99ms. Allocated memory is still 383.8MB. Free memory was 338.0MB in the beginning and 336.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:27,542 INFO L158 Benchmark]: RCFGBuilder took 379.69ms. Allocated memory is still 383.8MB. Free memory was 336.4MB in the beginning and 322.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:27:27,542 INFO L158 Benchmark]: TraceAbstraction took 4350.64ms. Allocated memory was 383.8MB in the beginning and 467.7MB in the end (delta: 83.9MB). Free memory was 321.7MB in the beginning and 430.2MB in the end (delta: -108.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:27,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 361.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 445.15ms. Allocated memory is still 383.8MB. Free memory was 359.0MB in the beginning and 340.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.21ms. Allocated memory is still 383.8MB. Free memory was 340.1MB in the beginning and 338.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.99ms. Allocated memory is still 383.8MB. Free memory was 338.0MB in the beginning and 336.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 379.69ms. Allocated memory is still 383.8MB. Free memory was 336.4MB in the beginning and 322.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4350.64ms. Allocated memory was 383.8MB in the beginning and 467.7MB in the end (delta: 83.9MB). Free memory was 321.7MB in the beginning and 430.2MB in the end (delta: -108.4MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 79 PlacesBefore, 26 PlacesAfterwards, 79 TransitionsBefore, 24 TransitionsAfterwards, 616 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 2346 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 873, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 333, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 873, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds 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: 18]: assertion always holds For all program executions holds that assertion always holds 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 7 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:27:27,564 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...