/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/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 16:10:22,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 16:10:22,950 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 16:10:22,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 16:10:22,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 16:10:22,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 16:10:22,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 16:10:22,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 16:10:22,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 16:10:22,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 16:10:22,993 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 16:10:22,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 16:10:22,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 16:10:22,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 16:10:22,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 16:10:22,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 16:10:22,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 16:10:22,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 16:10:22,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 16:10:22,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 16:10:22,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 16:10:22,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 16:10:22,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 16:10:22,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 16:10:22,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 16:10:22,998 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 16:10:22,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 16:10:22,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:10:22,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 16:10:22,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 16:10:23,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 16:10:23,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 16:10:23,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 16:10:23,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 16:10:23,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 16:10:23,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 16:10:23,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 16:10:23,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 16:10:23,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 16:10:23,352 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 16:10:23,353 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 16:10:23,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-26 16:10:24,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 16:10:24,885 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 16:10:24,885 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-26 16:10:24,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ecb0d23/9edddc58b1d14f19b69e9abf382699fc/FLAG95d9e5b7d [2023-08-26 16:10:24,915 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ecb0d23/9edddc58b1d14f19b69e9abf382699fc [2023-08-26 16:10:24,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 16:10:24,918 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 16:10:24,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 16:10:24,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 16:10:24,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 16:10:24,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:10:24" (1/1) ... [2023-08-26 16:10:24,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18aa3da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:24, skipping insertion in model container [2023-08-26 16:10:24,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:10:24" (1/1) ... [2023-08-26 16:10:24,984 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 16:10:25,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:10:25,361 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 16:10:25,389 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-26 16:10:25,390 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 16:10:25,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:10:25,460 INFO L206 MainTranslator]: Completed translation [2023-08-26 16:10:25,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25 WrapperNode [2023-08-26 16:10:25,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 16:10:25,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 16:10:25,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 16:10:25,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 16:10:25,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,535 INFO L138 Inliner]: procedures = 165, calls = 43, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 153 [2023-08-26 16:10:25,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 16:10:25,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 16:10:25,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 16:10:25,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 16:10:25,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 16:10:25,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 16:10:25,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 16:10:25,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 16:10:25,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (1/1) ... [2023-08-26 16:10:25,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:10:25,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:10:25,626 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 16:10:25,647 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 16:10:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 16:10:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 16:10:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 16:10:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 16:10:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 16:10:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 16:10:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 16:10:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 16:10:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 16:10:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 16:10:25,663 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 16:10:25,814 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 16:10:25,816 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 16:10:26,068 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 16:10:26,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 16:10:26,076 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 16:10:26,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:10:26 BoogieIcfgContainer [2023-08-26 16:10:26,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 16:10:26,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 16:10:26,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 16:10:26,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 16:10:26,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:10:24" (1/3) ... [2023-08-26 16:10:26,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5d8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:10:26, skipping insertion in model container [2023-08-26 16:10:26,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:10:25" (2/3) ... [2023-08-26 16:10:26,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5d8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:10:26, skipping insertion in model container [2023-08-26 16:10:26,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:10:26" (3/3) ... [2023-08-26 16:10:26,086 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-26 16:10:26,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 16:10:26,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 16:10:26,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 16:10:26,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 16:10:26,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 181 transitions, 367 flow [2023-08-26 16:10:26,256 INFO L124 PetriNetUnfolderBase]: 11/183 cut-off events. [2023-08-26 16:10:26,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:10:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 183 events. 11/183 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2023-08-26 16:10:26,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 181 transitions, 367 flow [2023-08-26 16:10:26,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 179 transitions, 361 flow [2023-08-26 16:10:26,271 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 16:10:26,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 179 transitions, 361 flow [2023-08-26 16:10:26,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 179 transitions, 361 flow [2023-08-26 16:10:26,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 179 transitions, 361 flow [2023-08-26 16:10:26,317 INFO L124 PetriNetUnfolderBase]: 11/179 cut-off events. [2023-08-26 16:10:26,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:10:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 179 events. 11/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 176 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2023-08-26 16:10:26,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 8096 [2023-08-26 16:10:31,752 INFO L134 LiptonReduction]: Checked pairs total: 14513 [2023-08-26 16:10:31,752 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-26 16:10:31,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 16:10:31,769 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;@3b1c59b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:10:31,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 16:10:31,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:10:31,770 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 16:10:31,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:10:31,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:31,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 16:10:31,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:31,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 735, now seen corresponding path program 1 times [2023-08-26 16:10:31,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:31,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137043019] [2023-08-26 16:10:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:31,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:31,885 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 16:10:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137043019] [2023-08-26 16:10:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137043019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 16:10:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158312322] [2023-08-26 16:10:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:31,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 16:10:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 16:10:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 16:10:31,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 383 [2023-08-26 16:10:31,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 167.5) internal successors, (335), 2 states have internal predecessors, (335), 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 16:10:31,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:31,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 383 [2023-08-26 16:10:31,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:32,033 INFO L124 PetriNetUnfolderBase]: 113/275 cut-off events. [2023-08-26 16:10:32,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:10:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 275 events. 113/275 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1089 event pairs, 104 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 511. Up to 241 conditions per place. [2023-08-26 16:10:32,040 INFO L140 encePairwiseOnDemand]: 377/383 looper letters, 20 selfloop transitions, 0 changer transitions 4/29 dead transitions. [2023-08-26 16:10:32,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 109 flow [2023-08-26 16:10:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 16:10:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 16:10:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 364 transitions. [2023-08-26 16:10:32,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751958224543081 [2023-08-26 16:10:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 364 transitions. [2023-08-26 16:10:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 364 transitions. [2023-08-26 16:10:32,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:32,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 364 transitions. [2023-08-26 16:10:32,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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 16:10:32,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 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 16:10:32,077 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 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 16:10:32,078 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 79 flow. Second operand 2 states and 364 transitions. [2023-08-26 16:10:32,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 109 flow [2023-08-26 16:10:32,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:10:32,082 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 52 flow [2023-08-26 16:10:32,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-26 16:10:32,086 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2023-08-26 16:10:32,087 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 52 flow [2023-08-26 16:10:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 167.5) internal successors, (335), 2 states have internal predecessors, (335), 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 16:10:32,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:32,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 16:10:32,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 16:10:32,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:32,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash 82860461, now seen corresponding path program 1 times [2023-08-26 16:10:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371111770] [2023-08-26 16:10:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:32,399 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 16:10:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371111770] [2023-08-26 16:10:32,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371111770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:32,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:32,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 16:10:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237140212] [2023-08-26 16:10:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:32,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 16:10:32,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:32,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 16:10:32,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 16:10:32,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 383 [2023-08-26 16:10:32,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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 16:10:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 383 [2023-08-26 16:10:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:32,507 INFO L124 PetriNetUnfolderBase]: 83/229 cut-off events. [2023-08-26 16:10:32,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:10:32,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 229 events. 83/229 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 868 event pairs, 8 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 418. Up to 126 conditions per place. [2023-08-26 16:10:32,509 INFO L140 encePairwiseOnDemand]: 378/383 looper letters, 34 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-26 16:10:32,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 168 flow [2023-08-26 16:10:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 16:10:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 16:10:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-08-26 16:10:32,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42088772845953004 [2023-08-26 16:10:32,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-08-26 16:10:32,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-08-26 16:10:32,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:32,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-08-26 16:10:32,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 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 16:10:32,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 383.0) internal successors, (2298), 6 states have internal predecessors, (2298), 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 16:10:32,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 383.0) internal successors, (2298), 6 states have internal predecessors, (2298), 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 16:10:32,523 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 52 flow. Second operand 5 states and 806 transitions. [2023-08-26 16:10:32,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 168 flow [2023-08-26 16:10:32,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 16:10:32,524 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 83 flow [2023-08-26 16:10:32,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-26 16:10:32,525 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-26 16:10:32,525 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 83 flow [2023-08-26 16:10:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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 16:10:32,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:32,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:32,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 16:10:32,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:32,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1975529790, now seen corresponding path program 1 times [2023-08-26 16:10:32,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:32,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196819769] [2023-08-26 16:10:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:32,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:32,771 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 16:10:32,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196819769] [2023-08-26 16:10:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196819769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:10:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295317823] [2023-08-26 16:10:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 16:10:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 16:10:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 16:10:32,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 383 [2023-08-26 16:10:32,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 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 16:10:32,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:32,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 383 [2023-08-26 16:10:32,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:32,919 INFO L124 PetriNetUnfolderBase]: 94/257 cut-off events. [2023-08-26 16:10:32,919 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 16:10:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 257 events. 94/257 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1067 event pairs, 32 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 544. Up to 120 conditions per place. [2023-08-26 16:10:32,921 INFO L140 encePairwiseOnDemand]: 377/383 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-08-26 16:10:32,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 240 flow [2023-08-26 16:10:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 16:10:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 16:10:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1268 transitions. [2023-08-26 16:10:32,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41383812010443866 [2023-08-26 16:10:32,952 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1268 transitions. [2023-08-26 16:10:32,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1268 transitions. [2023-08-26 16:10:32,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:32,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1268 transitions. [2023-08-26 16:10:32,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.5) internal successors, (1268), 8 states have internal predecessors, (1268), 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 16:10:32,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:32,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:32,962 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 83 flow. Second operand 8 states and 1268 transitions. [2023-08-26 16:10:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 240 flow [2023-08-26 16:10:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:10:32,964 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 126 flow [2023-08-26 16:10:32,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-08-26 16:10:32,965 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-26 16:10:32,965 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 126 flow [2023-08-26 16:10:32,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 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 16:10:32,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:32,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:32,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 16:10:32,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:32,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2069438523, now seen corresponding path program 1 times [2023-08-26 16:10:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902095790] [2023-08-26 16:10:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:33,020 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 16:10:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902095790] [2023-08-26 16:10:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902095790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:33,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:33,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:10:33,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118286714] [2023-08-26 16:10:33,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:33,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:10:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:10:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:10:33,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 383 [2023-08-26 16:10:33,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 16:10:33,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:33,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 383 [2023-08-26 16:10:33,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:33,097 INFO L124 PetriNetUnfolderBase]: 102/265 cut-off events. [2023-08-26 16:10:33,097 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 16:10:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 265 events. 102/265 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1042 event pairs, 37 based on Foata normal form. 15/280 useless extension candidates. Maximal degree in co-relation 634. Up to 151 conditions per place. [2023-08-26 16:10:33,098 INFO L140 encePairwiseOnDemand]: 375/383 looper letters, 34 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-08-26 16:10:33,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 233 flow [2023-08-26 16:10:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:10:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:10:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-26 16:10:33,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194952132288947 [2023-08-26 16:10:33,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-26 16:10:33,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-26 16:10:33,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:33,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-26 16:10:33,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 16:10:33,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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 16:10:33,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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 16:10:33,105 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 126 flow. Second operand 3 states and 482 transitions. [2023-08-26 16:10:33,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 233 flow [2023-08-26 16:10:33,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 211 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-26 16:10:33,107 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 127 flow [2023-08-26 16:10:33,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-26 16:10:33,108 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-26 16:10:33,108 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 127 flow [2023-08-26 16:10:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 16:10:33,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 16:10:33,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:33,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -108546955, now seen corresponding path program 1 times [2023-08-26 16:10:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211891580] [2023-08-26 16:10:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:33,225 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 16:10:33,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211891580] [2023-08-26 16:10:33,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211891580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:33,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:33,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 16:10:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086573003] [2023-08-26 16:10:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:33,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 16:10:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 16:10:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 16:10:33,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 383 [2023-08-26 16:10:33,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 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 16:10:33,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:33,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 383 [2023-08-26 16:10:33,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:33,393 INFO L124 PetriNetUnfolderBase]: 63/212 cut-off events. [2023-08-26 16:10:33,393 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 16:10:33,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 212 events. 63/212 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 914 event pairs, 31 based on Foata normal form. 10/217 useless extension candidates. Maximal degree in co-relation 554. Up to 110 conditions per place. [2023-08-26 16:10:33,395 INFO L140 encePairwiseOnDemand]: 375/383 looper letters, 41 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2023-08-26 16:10:33,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 311 flow [2023-08-26 16:10:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 16:10:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 16:10:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1220 transitions. [2023-08-26 16:10:33,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981723237597911 [2023-08-26 16:10:33,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1220 transitions. [2023-08-26 16:10:33,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1220 transitions. [2023-08-26 16:10:33,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:33,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1220 transitions. [2023-08-26 16:10:33,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.5) internal successors, (1220), 8 states have internal predecessors, (1220), 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 16:10:33,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:33,406 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:33,406 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 127 flow. Second operand 8 states and 1220 transitions. [2023-08-26 16:10:33,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 311 flow [2023-08-26 16:10:33,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 16:10:33,409 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 178 flow [2023-08-26 16:10:33,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-26 16:10:33,410 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-08-26 16:10:33,410 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 178 flow [2023-08-26 16:10:33,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 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 16:10:33,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:33,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:33,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 16:10:33,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:33,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2079254857, now seen corresponding path program 1 times [2023-08-26 16:10:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242033941] [2023-08-26 16:10:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:33,528 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 16:10:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242033941] [2023-08-26 16:10:33,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242033941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 16:10:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655667339] [2023-08-26 16:10:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 16:10:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 16:10:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 16:10:33,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 383 [2023-08-26 16:10:33,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 16:10:33,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:33,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 383 [2023-08-26 16:10:33,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:33,637 INFO L124 PetriNetUnfolderBase]: 62/211 cut-off events. [2023-08-26 16:10:33,637 INFO L125 PetriNetUnfolderBase]: For 140/142 co-relation queries the response was YES. [2023-08-26 16:10:33,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 211 events. 62/211 cut-off events. For 140/142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 917 event pairs, 29 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 601. Up to 116 conditions per place. [2023-08-26 16:10:33,638 INFO L140 encePairwiseOnDemand]: 378/383 looper letters, 39 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-26 16:10:33,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 335 flow [2023-08-26 16:10:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 16:10:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 16:10:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2023-08-26 16:10:33,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052219321148825 [2023-08-26 16:10:33,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2023-08-26 16:10:33,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2023-08-26 16:10:33,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:33,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2023-08-26 16:10:33,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 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 16:10:33,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 383.0) internal successors, (2298), 6 states have internal predecessors, (2298), 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 16:10:33,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 383.0) internal successors, (2298), 6 states have internal predecessors, (2298), 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 16:10:33,646 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 178 flow. Second operand 5 states and 776 transitions. [2023-08-26 16:10:33,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 335 flow [2023-08-26 16:10:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 16:10:33,649 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 204 flow [2023-08-26 16:10:33,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-26 16:10:33,650 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-26 16:10:33,650 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 204 flow [2023-08-26 16:10:33,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 16:10:33,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:33,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 16:10:33,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:33,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash 785505943, now seen corresponding path program 1 times [2023-08-26 16:10:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790733140] [2023-08-26 16:10:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:33,733 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 16:10:33,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790733140] [2023-08-26 16:10:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790733140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:33,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:33,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:10:33,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601665084] [2023-08-26 16:10:33,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:33,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 16:10:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 16:10:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 16:10:33,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 383 [2023-08-26 16:10:33,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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 16:10:33,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:33,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 383 [2023-08-26 16:10:33,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:33,830 INFO L124 PetriNetUnfolderBase]: 58/197 cut-off events. [2023-08-26 16:10:33,830 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-08-26 16:10:33,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 197 events. 58/197 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 831 event pairs, 32 based on Foata normal form. 5/198 useless extension candidates. Maximal degree in co-relation 601. Up to 109 conditions per place. [2023-08-26 16:10:33,831 INFO L140 encePairwiseOnDemand]: 376/383 looper letters, 40 selfloop transitions, 10 changer transitions 1/56 dead transitions. [2023-08-26 16:10:33,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 374 flow [2023-08-26 16:10:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 16:10:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 16:10:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1112 transitions. [2023-08-26 16:10:33,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41477060798209625 [2023-08-26 16:10:33,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1112 transitions. [2023-08-26 16:10:33,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1112 transitions. [2023-08-26 16:10:33,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:33,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1112 transitions. [2023-08-26 16:10:33,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.85714285714286) internal successors, (1112), 7 states have internal predecessors, (1112), 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 16:10:33,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 383.0) internal successors, (3064), 8 states have internal predecessors, (3064), 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 16:10:33,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 383.0) internal successors, (3064), 8 states have internal predecessors, (3064), 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 16:10:33,842 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 204 flow. Second operand 7 states and 1112 transitions. [2023-08-26 16:10:33,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 374 flow [2023-08-26 16:10:33,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 16:10:33,845 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 247 flow [2023-08-26 16:10:33,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2023-08-26 16:10:33,846 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-08-26 16:10:33,846 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 247 flow [2023-08-26 16:10:33,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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 16:10:33,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:33,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:33,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 16:10:33,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:33,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:33,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1004070750, now seen corresponding path program 1 times [2023-08-26 16:10:33,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005230678] [2023-08-26 16:10:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:33,996 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 16:10:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005230678] [2023-08-26 16:10:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005230678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:33,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 16:10:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392594958] [2023-08-26 16:10:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:33,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 16:10:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 16:10:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 16:10:33,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 383 [2023-08-26 16:10:34,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 16:10:34,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:34,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 383 [2023-08-26 16:10:34,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:34,080 INFO L124 PetriNetUnfolderBase]: 76/218 cut-off events. [2023-08-26 16:10:34,080 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-26 16:10:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 218 events. 76/218 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 843 event pairs, 25 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 730. Up to 117 conditions per place. [2023-08-26 16:10:34,081 INFO L140 encePairwiseOnDemand]: 378/383 looper letters, 41 selfloop transitions, 8 changer transitions 3/55 dead transitions. [2023-08-26 16:10:34,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 415 flow [2023-08-26 16:10:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 16:10:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 16:10:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 575 transitions. [2023-08-26 16:10:34,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37532637075718017 [2023-08-26 16:10:34,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 575 transitions. [2023-08-26 16:10:34,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 575 transitions. [2023-08-26 16:10:34,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:34,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 575 transitions. [2023-08-26 16:10:34,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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 16:10:34,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:34,088 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:34,088 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 247 flow. Second operand 4 states and 575 transitions. [2023-08-26 16:10:34,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 415 flow [2023-08-26 16:10:34,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 403 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 16:10:34,091 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 243 flow [2023-08-26 16:10:34,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-26 16:10:34,092 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-08-26 16:10:34,092 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 243 flow [2023-08-26 16:10:34,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 16:10:34,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:34,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 16:10:34,093 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:34,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash -870393709, now seen corresponding path program 1 times [2023-08-26 16:10:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963578303] [2023-08-26 16:10:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:34,229 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 16:10:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963578303] [2023-08-26 16:10:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963578303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 16:10:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445846737] [2023-08-26 16:10:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 16:10:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 16:10:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 16:10:34,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 383 [2023-08-26 16:10:34,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 16:10:34,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:34,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 383 [2023-08-26 16:10:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:34,357 INFO L124 PetriNetUnfolderBase]: 46/163 cut-off events. [2023-08-26 16:10:34,357 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-08-26 16:10:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 163 events. 46/163 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 606 event pairs, 7 based on Foata normal form. 6/168 useless extension candidates. Maximal degree in co-relation 556. Up to 58 conditions per place. [2023-08-26 16:10:34,358 INFO L140 encePairwiseOnDemand]: 377/383 looper letters, 36 selfloop transitions, 8 changer transitions 1/53 dead transitions. [2023-08-26 16:10:34,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 389 flow [2023-08-26 16:10:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 16:10:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 16:10:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1183 transitions. [2023-08-26 16:10:34,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38609660574412535 [2023-08-26 16:10:34,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1183 transitions. [2023-08-26 16:10:34,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1183 transitions. [2023-08-26 16:10:34,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:34,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1183 transitions. [2023-08-26 16:10:34,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 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 16:10:34,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:34,374 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 383.0) internal successors, (3447), 9 states have internal predecessors, (3447), 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 16:10:34,374 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 243 flow. Second operand 8 states and 1183 transitions. [2023-08-26 16:10:34,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 389 flow [2023-08-26 16:10:34,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 16:10:34,376 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 239 flow [2023-08-26 16:10:34,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2023-08-26 16:10:34,378 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2023-08-26 16:10:34,378 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 239 flow [2023-08-26 16:10:34,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 16:10:34,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:34,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:34,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 16:10:34,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:34,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash -903242173, now seen corresponding path program 1 times [2023-08-26 16:10:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837474137] [2023-08-26 16:10:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:34,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:34,615 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 16:10:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837474137] [2023-08-26 16:10:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837474137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 16:10:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383989170] [2023-08-26 16:10:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 16:10:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 16:10:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 16:10:34,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 383 [2023-08-26 16:10:34,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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 16:10:34,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:34,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 383 [2023-08-26 16:10:34,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:34,818 INFO L124 PetriNetUnfolderBase]: 42/153 cut-off events. [2023-08-26 16:10:34,818 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-08-26 16:10:34,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 153 events. 42/153 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 541 event pairs, 7 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 524. Up to 40 conditions per place. [2023-08-26 16:10:34,820 INFO L140 encePairwiseOnDemand]: 376/383 looper letters, 38 selfloop transitions, 11 changer transitions 2/59 dead transitions. [2023-08-26 16:10:34,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 427 flow [2023-08-26 16:10:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 16:10:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 16:10:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1749 transitions. [2023-08-26 16:10:34,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38054830287206265 [2023-08-26 16:10:34,825 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1749 transitions. [2023-08-26 16:10:34,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1749 transitions. [2023-08-26 16:10:34,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:34,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1749 transitions. [2023-08-26 16:10:34,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.75) internal successors, (1749), 12 states have internal predecessors, (1749), 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 16:10:34,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 383.0) internal successors, (4979), 13 states have internal predecessors, (4979), 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 16:10:34,835 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 383.0) internal successors, (4979), 13 states have internal predecessors, (4979), 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 16:10:34,835 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 239 flow. Second operand 12 states and 1749 transitions. [2023-08-26 16:10:34,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 427 flow [2023-08-26 16:10:34,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 399 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-26 16:10:34,838 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 234 flow [2023-08-26 16:10:34,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-08-26 16:10:34,838 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2023-08-26 16:10:34,839 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 234 flow [2023-08-26 16:10:34,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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 16:10:34,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:34,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:34,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 16:10:34,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:34,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash -432298058, now seen corresponding path program 1 times [2023-08-26 16:10:34,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:34,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274926913] [2023-08-26 16:10:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:34,925 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 16:10:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:34,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274926913] [2023-08-26 16:10:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274926913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:34,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:34,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 16:10:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143345405] [2023-08-26 16:10:34,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:34,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 16:10:34,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 16:10:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 16:10:34,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 383 [2023-08-26 16:10:34,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 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 16:10:34,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:34,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 383 [2023-08-26 16:10:34,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:35,001 INFO L124 PetriNetUnfolderBase]: 41/149 cut-off events. [2023-08-26 16:10:35,001 INFO L125 PetriNetUnfolderBase]: For 192/196 co-relation queries the response was YES. [2023-08-26 16:10:35,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 149 events. 41/149 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 520 event pairs, 24 based on Foata normal form. 7/154 useless extension candidates. Maximal degree in co-relation 510. Up to 80 conditions per place. [2023-08-26 16:10:35,002 INFO L140 encePairwiseOnDemand]: 378/383 looper letters, 32 selfloop transitions, 10 changer transitions 5/52 dead transitions. [2023-08-26 16:10:35,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 52 transitions, 382 flow [2023-08-26 16:10:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 16:10:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 16:10:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2023-08-26 16:10:35,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112271540469974 [2023-08-26 16:10:35,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2023-08-26 16:10:35,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2023-08-26 16:10:35,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:35,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2023-08-26 16:10:35,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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 16:10:35,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:35,008 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:35,008 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 234 flow. Second operand 4 states and 630 transitions. [2023-08-26 16:10:35,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 52 transitions, 382 flow [2023-08-26 16:10:35,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 357 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-26 16:10:35,011 INFO L231 Difference]: Finished difference. Result has 61 places, 39 transitions, 236 flow [2023-08-26 16:10:35,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2023-08-26 16:10:35,012 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2023-08-26 16:10:35,012 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 236 flow [2023-08-26 16:10:35,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 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 16:10:35,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:10:35,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 16:10:35,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-26 16:10:35,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:10:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1173072420, now seen corresponding path program 1 times [2023-08-26 16:10:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:10:35,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174532881] [2023-08-26 16:10:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:10:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:10:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:10:35,230 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 16:10:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:10:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174532881] [2023-08-26 16:10:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174532881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:10:35,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:10:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 16:10:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750074856] [2023-08-26 16:10:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:10:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 16:10:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:10:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 16:10:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 16:10:35,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 383 [2023-08-26 16:10:35,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 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 16:10:35,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:10:35,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 383 [2023-08-26 16:10:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:10:35,282 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2023-08-26 16:10:35,282 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-26 16:10:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 98 events. 24/98 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 266 event pairs, 10 based on Foata normal form. 15/113 useless extension candidates. Maximal degree in co-relation 344. Up to 84 conditions per place. [2023-08-26 16:10:35,283 INFO L140 encePairwiseOnDemand]: 380/383 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-26 16:10:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 316 flow [2023-08-26 16:10:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 16:10:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 16:10:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-08-26 16:10:35,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720626631853786 [2023-08-26 16:10:35,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-08-26 16:10:35,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-08-26 16:10:35,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:10:35,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-08-26 16:10:35,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 16:10:35,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:35,289 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 383.0) internal successors, (1915), 5 states have internal predecessors, (1915), 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 16:10:35,289 INFO L175 Difference]: Start difference. First operand has 61 places, 39 transitions, 236 flow. Second operand 4 states and 570 transitions. [2023-08-26 16:10:35,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 316 flow [2023-08-26 16:10:35,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 289 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-26 16:10:35,291 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-26 16:10:35,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-26 16:10:35,291 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-26 16:10:35,291 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-26 16:10:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 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 16:10:35,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (5 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONASSERT (4 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (2 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONASSERT (1 of 9 remaining) [2023-08-26 16:10:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (0 of 9 remaining) [2023-08-26 16:10:35,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 16:10:35,296 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:10:35,300 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 16:10:35,300 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 16:10:35,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:10:35 BasicIcfg [2023-08-26 16:10:35,303 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 16:10:35,303 INFO L158 Benchmark]: Toolchain (without parser) took 10385.00ms. Allocated memory was 352.3MB in the beginning and 557.8MB in the end (delta: 205.5MB). Free memory was 326.3MB in the beginning and 279.3MB in the end (delta: 47.0MB). Peak memory consumption was 254.7MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,303 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory was 328.8MB in the beginning and 328.7MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.84ms. Allocated memory is still 352.3MB. Free memory was 326.3MB in the beginning and 306.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.34ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 303.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,304 INFO L158 Benchmark]: Boogie Preprocessor took 39.82ms. Allocated memory is still 352.3MB. Free memory was 303.6MB in the beginning and 302.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 16:10:35,304 INFO L158 Benchmark]: RCFGBuilder took 486.84ms. Allocated memory is still 352.3MB. Free memory was 302.2MB in the beginning and 283.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,304 INFO L158 Benchmark]: TraceAbstraction took 9222.32ms. Allocated memory was 352.3MB in the beginning and 557.8MB in the end (delta: 205.5MB). Free memory was 282.6MB in the beginning and 279.3MB in the end (delta: 3.3MB). Peak memory consumption was 210.6MB. Max. memory is 16.0GB. [2023-08-26 16:10:35,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory was 328.8MB in the beginning and 328.7MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 542.84ms. Allocated memory is still 352.3MB. Free memory was 326.3MB in the beginning and 306.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 73.34ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 303.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.82ms. Allocated memory is still 352.3MB. Free memory was 303.6MB in the beginning and 302.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 486.84ms. Allocated memory is still 352.3MB. Free memory was 302.2MB in the beginning and 283.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 9222.32ms. Allocated memory was 352.3MB in the beginning and 557.8MB in the end (delta: 205.5MB). Free memory was 282.6MB in the beginning and 279.3MB in the end (delta: 3.3MB). Peak memory consumption was 210.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 236]: Unsoundness Warning unspecified type, defaulting to int C: short [236] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 172 PlacesBefore, 37 PlacesAfterwards, 179 TransitionsBefore, 38 TransitionsAfterwards, 8096 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 33 ConcurrentYvCompositions, 6 ChoiceCompositions, 202 TotalNumberOfCompositions, 14513 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8233, independent: 7927, independent conditional: 0, independent unconditional: 7927, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4700, independent: 4634, independent conditional: 0, independent unconditional: 4634, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8233, independent: 3293, independent conditional: 0, independent unconditional: 3293, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 4700, unknown conditional: 0, unknown unconditional: 4700] , Statistics on independence cache: Total cache size (in pairs): 123, Positive cache size: 94, Positive conditional cache size: 0, Positive unconditional cache size: 94, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, 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: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: 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 3 procedures, 251 locations, 9 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: 9.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 341 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 341 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 963 IncrementalHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 11 mSDtfsCounter, 963 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=7, InterpolantAutomatonStates: 70, 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, 1.5s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 741 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 16:10:35,324 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...