/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 PROGRAM_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/13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:40:27,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:40:27,302 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 18:40:27,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:40:27,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:40:27,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:40:27,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:40:27,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:40:27,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:40:27,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:40:27,342 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:40:27,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:40:27,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:40:27,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:40:27,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:40:27,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:40:27,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:40:27,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:40:27,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:40:27,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:40:27,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:40:27,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:40:27,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:40:27,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:40:27,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:40:27,347 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:40:27,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:40:27,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:40:27,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:40:27,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:40:27,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:40:27,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:40:27,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:40:27,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:40:27,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:40:27,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:40:27,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:40:27,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:40:27,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:40:27,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:40:27,636 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:40:27,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2023-08-26 18:40:28,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:40:29,173 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:40:29,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2023-08-26 18:40:29,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80032e3dc/f8fe4b2220d84f3689940e8eda1650e9/FLAG04a47449c [2023-08-26 18:40:29,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80032e3dc/f8fe4b2220d84f3689940e8eda1650e9 [2023-08-26 18:40:29,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:40:29,218 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:40:29,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:40:29,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:40:29,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:40:29,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25efb146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29, skipping insertion in model container [2023-08-26 18:40:29,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,270 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:40:29,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:40:29,593 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:40:29,618 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 18:40:29,619 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 18:40:29,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:40:29,676 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:40:29,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29 WrapperNode [2023-08-26 18:40:29,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:40:29,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:40:29,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:40:29,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:40:29,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,727 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-08-26 18:40:29,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:40:29,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:40:29,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:40:29,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:40:29,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:40:29,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:40:29,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:40:29,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:40:29,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (1/1) ... [2023-08-26 18:40:29,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:40:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:40:29,787 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 18:40:29,794 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 18:40:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:40:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:40:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:40:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:40:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:40:29,825 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:40:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:40:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:40:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:40:29,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:40:29,827 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 18:40:29,969 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:40:29,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:40:30,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:40:30,162 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:40:30,162 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:40:30,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:40:30 BoogieIcfgContainer [2023-08-26 18:40:30,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:40:30,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:40:30,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:40:30,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:40:30,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:40:29" (1/3) ... [2023-08-26 18:40:30,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb1da0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:40:30, skipping insertion in model container [2023-08-26 18:40:30,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:40:29" (2/3) ... [2023-08-26 18:40:30,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb1da0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:40:30, skipping insertion in model container [2023-08-26 18:40:30,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:40:30" (3/3) ... [2023-08-26 18:40:30,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2023-08-26 18:40:30,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:40:30,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-26 18:40:30,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:40:30,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 18:40:30,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 147 flow [2023-08-26 18:40:30,281 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-08-26 18:40:30,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:40:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-26 18:40:30,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 71 transitions, 147 flow [2023-08-26 18:40:30,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 119 flow [2023-08-26 18:40:30,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:40:30,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 119 flow [2023-08-26 18:40:30,300 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 119 flow [2023-08-26 18:40:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 119 flow [2023-08-26 18:40:30,316 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2023-08-26 18:40:30,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:40:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 58 events. 0/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 18:40:30,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 340 [2023-08-26 18:40:32,579 INFO L134 LiptonReduction]: Checked pairs total: 934 [2023-08-26 18:40:32,579 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-26 18:40:32,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:40:32,600 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;@55d67c1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:40:32,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-26 18:40:32,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:40:32,603 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:40:32,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:40:32,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:40:32,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:40:32,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 18:40:32,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:40:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 240, now seen corresponding path program 1 times [2023-08-26 18:40:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:40:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268291100] [2023-08-26 18:40:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:40:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:40:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:40:32,708 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 18:40:32,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:40:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268291100] [2023-08-26 18:40:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268291100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:40:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:40:32,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:40:32,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319282141] [2023-08-26 18:40:32,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:40:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:40:32,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:40:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:40:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:40:32,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 120 [2023-08-26 18:40:32,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 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 18:40:32,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:40:32,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 120 [2023-08-26 18:40:32,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:40:32,794 INFO L124 PetriNetUnfolderBase]: 12/45 cut-off events. [2023-08-26 18:40:32,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:40:32,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 45 events. 12/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 12 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 74. Up to 34 conditions per place. [2023-08-26 18:40:32,798 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 9 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-26 18:40:32,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 47 flow [2023-08-26 18:40:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:40:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:40:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2023-08-26 18:40:32,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2023-08-26 18:40:32,808 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 145 transitions. [2023-08-26 18:40:32,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 145 transitions. [2023-08-26 18:40:32,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:40:32,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 145 transitions. [2023-08-26 18:40:32,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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 18:40:32,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 18:40:32,816 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 18:40:32,817 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 2 states and 145 transitions. [2023-08-26 18:40:32,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 47 flow [2023-08-26 18:40:32,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:40:32,820 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2023-08-26 18:40:32,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-26 18:40:32,825 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-26 18:40:32,825 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2023-08-26 18:40:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 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 18:40:32,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:40:32,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:40:32,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:40:32,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 18:40:32,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:40:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 4020143, now seen corresponding path program 1 times [2023-08-26 18:40:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:40:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001907149] [2023-08-26 18:40:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:40:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:40:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:40:33,040 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 18:40:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:40:33,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001907149] [2023-08-26 18:40:33,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001907149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:40:33,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:40:33,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 18:40:33,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171700229] [2023-08-26 18:40:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:40:33,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:40:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:40:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:40:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:40:33,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 120 [2023-08-26 18:40:33,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 18:40:33,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:40:33,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 120 [2023-08-26 18:40:33,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:40:33,075 INFO L124 PetriNetUnfolderBase]: 12/51 cut-off events. [2023-08-26 18:40:33,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:40:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 51 events. 12/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 142 event pairs, 9 based on Foata normal form. 5/56 useless extension candidates. Maximal degree in co-relation 90. Up to 30 conditions per place. [2023-08-26 18:40:33,076 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 10 selfloop transitions, 2 changer transitions 2/17 dead transitions. [2023-08-26 18:40:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 64 flow [2023-08-26 18:40:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:40:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:40:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-26 18:40:33,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-26 18:40:33,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-26 18:40:33,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-26 18:40:33,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:40:33,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-26 18:40:33,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 18:40:33,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,086 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 204 transitions. [2023-08-26 18:40:33,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 64 flow [2023-08-26 18:40:33,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:40:33,087 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 36 flow [2023-08-26 18:40:33,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-26 18:40:33,088 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-26 18:40:33,088 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 36 flow [2023-08-26 18:40:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 18:40:33,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:40:33,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:40:33,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:40:33,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 18:40:33,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:40:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -416967335, now seen corresponding path program 1 times [2023-08-26 18:40:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:40:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684817743] [2023-08-26 18:40:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:40:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:40:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:40:33,246 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 18:40:33,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:40:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684817743] [2023-08-26 18:40:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684817743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:40:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:40:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:40:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703524787] [2023-08-26 18:40:33,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:40:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:40:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:40:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:40:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:40:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 120 [2023-08-26 18:40:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 18:40:33,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:40:33,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 120 [2023-08-26 18:40:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:40:33,291 INFO L124 PetriNetUnfolderBase]: 10/35 cut-off events. [2023-08-26 18:40:33,291 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 18:40:33,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 35 events. 10/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 4 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 79. Up to 20 conditions per place. [2023-08-26 18:40:33,292 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 11 selfloop transitions, 4 changer transitions 0/16 dead transitions. [2023-08-26 18:40:33,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 74 flow [2023-08-26 18:40:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:40:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:40:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-08-26 18:40:33,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-26 18:40:33,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-08-26 18:40:33,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-08-26 18:40:33,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:40:33,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-08-26 18:40:33,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 18:40:33,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,300 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 36 flow. Second operand 3 states and 170 transitions. [2023-08-26 18:40:33,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 74 flow [2023-08-26 18:40:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:40:33,301 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 42 flow [2023-08-26 18:40:33,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-08-26 18:40:33,302 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-08-26 18:40:33,302 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 42 flow [2023-08-26 18:40:33,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 18:40:33,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:40:33,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:40:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 18:40:33,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 18:40:33,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:40:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -688045219, now seen corresponding path program 2 times [2023-08-26 18:40:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:40:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830082804] [2023-08-26 18:40:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:40:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:40:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:40:33,487 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 18:40:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:40:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830082804] [2023-08-26 18:40:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830082804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:40:33,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:40:33,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:40:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89070569] [2023-08-26 18:40:33,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:40:33,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:40:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:40:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:40:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:40:33,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 120 [2023-08-26 18:40:33,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 18:40:33,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:40:33,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 120 [2023-08-26 18:40:33,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:40:33,524 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-08-26 18:40:33,525 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 18:40:33,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 18 events. 1/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 7/25 useless extension candidates. Maximal degree in co-relation 46. Up to 12 conditions per place. [2023-08-26 18:40:33,525 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 6 selfloop transitions, 6 changer transitions 1/14 dead transitions. [2023-08-26 18:40:33,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 72 flow [2023-08-26 18:40:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:40:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:40:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2023-08-26 18:40:33,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2023-08-26 18:40:33,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 196 transitions. [2023-08-26 18:40:33,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 196 transitions. [2023-08-26 18:40:33,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:40:33,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 196 transitions. [2023-08-26 18:40:33,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 18:40:33,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,533 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 42 flow. Second operand 4 states and 196 transitions. [2023-08-26 18:40:33,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 72 flow [2023-08-26 18:40:33,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 14 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:40:33,533 INFO L231 Difference]: Finished difference. Result has 23 places, 13 transitions, 50 flow [2023-08-26 18:40:33,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2023-08-26 18:40:33,535 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-08-26 18:40:33,535 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 50 flow [2023-08-26 18:40:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 18:40:33,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:40:33,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:40:33,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 18:40:33,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 18:40:33,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:40:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 668825289, now seen corresponding path program 1 times [2023-08-26 18:40:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:40:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886300895] [2023-08-26 18:40:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:40:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:40:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:40:33,697 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 18:40:33,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:40:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886300895] [2023-08-26 18:40:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886300895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:40:33,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:40:33,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:40:33,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750180960] [2023-08-26 18:40:33,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:40:33,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:40:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:40:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:40:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:40:33,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 120 [2023-08-26 18:40:33,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 18:40:33,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:40:33,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 120 [2023-08-26 18:40:33,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:40:33,730 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-26 18:40:33,730 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 18:40:33,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 12 events. 1/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 35. Up to 9 conditions per place. [2023-08-26 18:40:33,732 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-26 18:40:33,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 10 transitions, 59 flow [2023-08-26 18:40:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:40:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:40:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2023-08-26 18:40:33,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39791666666666664 [2023-08-26 18:40:33,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 191 transitions. [2023-08-26 18:40:33,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 191 transitions. [2023-08-26 18:40:33,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:40:33,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 191 transitions. [2023-08-26 18:40:33,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 18:40:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,741 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:40:33,741 INFO L175 Difference]: Start difference. First operand has 23 places, 13 transitions, 50 flow. Second operand 4 states and 191 transitions. [2023-08-26 18:40:33,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 10 transitions, 59 flow [2023-08-26 18:40:33,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 52 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 18:40:33,742 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-26 18:40:33,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-26 18:40:33,743 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2023-08-26 18:40:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-26 18:40:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 18:40:33,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-08-26 18:40:33,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-08-26 18:40:33,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2023-08-26 18:40:33,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-26 18:40:33,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 18:40:33,747 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-26 18:40:33,749 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:40:33,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:40:33,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:40:33 BasicIcfg [2023-08-26 18:40:33,752 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:40:33,753 INFO L158 Benchmark]: Toolchain (without parser) took 4535.41ms. Allocated memory was 358.6MB in the beginning and 450.9MB in the end (delta: 92.3MB). Free memory was 333.5MB in the beginning and 400.3MB in the end (delta: -66.7MB). Peak memory consumption was 25.9MB. Max. memory is 16.0GB. [2023-08-26 18:40:33,753 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:40:33,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.59ms. Allocated memory is still 358.6MB. Free memory was 333.1MB in the beginning and 314.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 18:40:33,754 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 358.6MB. Free memory was 314.3MB in the beginning and 312.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:40:33,754 INFO L158 Benchmark]: Boogie Preprocessor took 28.18ms. Allocated memory is still 358.6MB. Free memory was 312.2MB in the beginning and 311.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:40:33,755 INFO L158 Benchmark]: RCFGBuilder took 407.76ms. Allocated memory is still 358.6MB. Free memory was 311.0MB in the beginning and 297.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 18:40:33,755 INFO L158 Benchmark]: TraceAbstraction took 3586.85ms. Allocated memory was 358.6MB in the beginning and 450.9MB in the end (delta: 92.3MB). Free memory was 297.1MB in the beginning and 400.3MB in the end (delta: -103.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:40:33,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 458.59ms. Allocated memory is still 358.6MB. Free memory was 333.1MB in the beginning and 314.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 358.6MB. Free memory was 314.3MB in the beginning and 312.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.18ms. Allocated memory is still 358.6MB. Free memory was 312.2MB in the beginning and 311.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 407.76ms. Allocated memory is still 358.6MB. Free memory was 311.0MB in the beginning and 297.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3586.85ms. Allocated memory was 358.6MB in the beginning and 450.9MB in the end (delta: 92.3MB). Free memory was 297.1MB in the beginning and 400.3MB in the end (delta: -103.2MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 62 PlacesBefore, 19 PlacesAfterwards, 58 TransitionsBefore, 15 TransitionsAfterwards, 340 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 934 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 407, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 178, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 407, independent: 134, independent conditional: 0, independent unconditional: 134, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 178, unknown conditional: 0, unknown unconditional: 178] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 82 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 3 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 18:40:33,788 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...