/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:12:33,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:12:33,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:12:33,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:12:33,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:12:33,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:12:33,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:12:33,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:12:33,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:12:33,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:12:33,169 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:12:33,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:12:33,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:12:33,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:12:33,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:12:33,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:12:33,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:12:33,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:12:33,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:12:33,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:12:33,171 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:12:33,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:12:33,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:12:33,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:12:33,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:12:33,172 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:12:33,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:12:33,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:12:33,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:12:33,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:12:33,174 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:12:33,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:12:33,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:12:33,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:12:33,434 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:12:33,436 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:12:33,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-26 12:12:34,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:12:34,581 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:12:34,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-26 12:12:34,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc06dc403/5ffd12bdedd541209dfd62acf1ee05a9/FLAG52bf6c86d [2023-08-26 12:12:34,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc06dc403/5ffd12bdedd541209dfd62acf1ee05a9 [2023-08-26 12:12:34,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:12:34,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:12:34,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:12:34,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:12:34,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:12:34,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:34,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a258ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34, skipping insertion in model container [2023-08-26 12:12:34,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:34,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:12:34,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:12:34,866 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:12:34,891 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:12:34,892 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:12:34,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:12:34,935 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:12:34,935 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:12:34,940 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:12:34,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34 WrapperNode [2023-08-26 12:12:34,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:12:34,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:12:34,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:12:34,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:12:34,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:34,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:34,988 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 12:12:34,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:12:34,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:12:34,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:12:34,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:12:34,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:34,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:12:35,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:12:35,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:12:35,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:12:35,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (1/1) ... [2023-08-26 12:12:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:12:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:12:35,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:12:35,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:12:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:12:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:12:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:12:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:12:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 12:12:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 12:12:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:12:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:12:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:12:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:12:35,087 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:12:35,214 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:12:35,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:12:35,378 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:12:35,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:12:35,386 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:12:35,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:12:35 BoogieIcfgContainer [2023-08-26 12:12:35,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:12:35,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:12:35,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:12:35,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:12:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:12:34" (1/3) ... [2023-08-26 12:12:35,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425b654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:12:35, skipping insertion in model container [2023-08-26 12:12:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:12:34" (2/3) ... [2023-08-26 12:12:35,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425b654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:12:35, skipping insertion in model container [2023-08-26 12:12:35,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:12:35" (3/3) ... [2023-08-26 12:12:35,392 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-08-26 12:12:35,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:12:35,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 12:12:35,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:12:35,441 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:12:35,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:12:35,496 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 12:12:35,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:12:35,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-26 12:12:35,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:12:35,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 77 transitions, 163 flow [2023-08-26 12:12:35,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:12:35,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:12:35,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:12:35,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 77 transitions, 163 flow [2023-08-26 12:12:35,533 INFO L124 PetriNetUnfolderBase]: 1/77 cut-off events. [2023-08-26 12:12:35,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:12:35,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 12:12:35,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-26 12:12:37,308 INFO L134 LiptonReduction]: Checked pairs total: 2164 [2023-08-26 12:12:37,308 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-26 12:12:37,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:12:37,328 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;@743317b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:12:37,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 12:12:37,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:12:37,329 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:12:37,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:12:37,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:37,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:12:37,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:37,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 323, now seen corresponding path program 1 times [2023-08-26 12:12:37,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:37,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275564813] [2023-08-26 12:12:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275564813] [2023-08-26 12:12:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275564813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:37,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:12:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950098004] [2023-08-26 12:12:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:37,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:12:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:12:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:12:37,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-26 12:12:37,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:37,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-26 12:12:37,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:37,530 INFO L124 PetriNetUnfolderBase]: 164/287 cut-off events. [2023-08-26 12:12:37,530 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 12:12:37,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 287 events. 164/287 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1157 event pairs, 164 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 577. Up to 271 conditions per place. [2023-08-26 12:12:37,534 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 12:12:37,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2023-08-26 12:12:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:12:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:12:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2023-08-26 12:12:37,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2023-08-26 12:12:37,545 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2023-08-26 12:12:37,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2023-08-26 12:12:37,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:37,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2023-08-26 12:12:37,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,559 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,560 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 55 flow. Second operand 2 states and 194 transitions. [2023-08-26 12:12:37,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2023-08-26 12:12:37,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 12:12:37,562 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-26 12:12:37,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-26 12:12:37,566 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-26 12:12:37,566 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-26 12:12:37,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:37,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:12:37,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:37,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1849881010, now seen corresponding path program 1 times [2023-08-26 12:12:37,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:37,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625091880] [2023-08-26 12:12:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:37,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625091880] [2023-08-26 12:12:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625091880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:37,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:12:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123185799] [2023-08-26 12:12:37,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:12:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:12:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:12:37,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 165 [2023-08-26 12:12:37,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:37,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 165 [2023-08-26 12:12:37,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:37,899 INFO L124 PetriNetUnfolderBase]: 408/708 cut-off events. [2023-08-26 12:12:37,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:12:37,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 708 events. 408/708 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3487 event pairs, 157 based on Foata normal form. 37/745 useless extension candidates. Maximal degree in co-relation 1426. Up to 382 conditions per place. [2023-08-26 12:12:37,904 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-26 12:12:37,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 128 flow [2023-08-26 12:12:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:12:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:12:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-26 12:12:37,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-26 12:12:37,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-26 12:12:37,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-26 12:12:37,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:37,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-26 12:12:37,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,913 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 264 transitions. [2023-08-26 12:12:37,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 128 flow [2023-08-26 12:12:37,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:12:37,915 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 86 flow [2023-08-26 12:12:37,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-26 12:12:37,917 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-26 12:12:37,917 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 86 flow [2023-08-26 12:12:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:37,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:37,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:37,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:12:37,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:37,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1511735666, now seen corresponding path program 1 times [2023-08-26 12:12:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179918735] [2023-08-26 12:12:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179918735] [2023-08-26 12:12:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179918735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:12:38,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701996170] [2023-08-26 12:12:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:12:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:12:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:12:38,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 165 [2023-08-26 12:12:38,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:38,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 165 [2023-08-26 12:12:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:38,146 INFO L124 PetriNetUnfolderBase]: 380/657 cut-off events. [2023-08-26 12:12:38,146 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-08-26 12:12:38,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 657 events. 380/657 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3082 event pairs, 85 based on Foata normal form. 9/660 useless extension candidates. Maximal degree in co-relation 1783. Up to 264 conditions per place. [2023-08-26 12:12:38,150 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 26 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-26 12:12:38,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 192 flow [2023-08-26 12:12:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:12:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:12:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-08-26 12:12:38,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196969696969697 [2023-08-26 12:12:38,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-08-26 12:12:38,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-08-26 12:12:38,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:38,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-08-26 12:12:38,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,154 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,154 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 86 flow. Second operand 4 states and 343 transitions. [2023-08-26 12:12:38,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 192 flow [2023-08-26 12:12:38,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:12:38,157 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 122 flow [2023-08-26 12:12:38,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-26 12:12:38,158 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-26 12:12:38,158 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 122 flow [2023-08-26 12:12:38,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:38,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:12:38,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:38,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1511735573, now seen corresponding path program 1 times [2023-08-26 12:12:38,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:38,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755385473] [2023-08-26 12:12:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:38,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755385473] [2023-08-26 12:12:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755385473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:38,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:38,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:12:38,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742273470] [2023-08-26 12:12:38,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:38,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:12:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:38,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:12:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:12:38,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 165 [2023-08-26 12:12:38,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:38,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 165 [2023-08-26 12:12:38,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:38,367 INFO L124 PetriNetUnfolderBase]: 360/637 cut-off events. [2023-08-26 12:12:38,368 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 12:12:38,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 637 events. 360/637 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3053 event pairs, 55 based on Foata normal form. 4/641 useless extension candidates. Maximal degree in co-relation 1869. Up to 302 conditions per place. [2023-08-26 12:12:38,372 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-26 12:12:38,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 318 flow [2023-08-26 12:12:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:12:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:12:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-08-26 12:12:38,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2023-08-26 12:12:38,373 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-08-26 12:12:38,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-08-26 12:12:38,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:38,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-08-26 12:12:38,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,375 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 122 flow. Second operand 4 states and 351 transitions. [2023-08-26 12:12:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 318 flow [2023-08-26 12:12:38,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:12:38,379 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 246 flow [2023-08-26 12:12:38,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-26 12:12:38,381 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-26 12:12:38,381 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 246 flow [2023-08-26 12:12:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:38,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:12:38,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:38,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash -380849914, now seen corresponding path program 1 times [2023-08-26 12:12:38,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:38,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511939852] [2023-08-26 12:12:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:38,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511939852] [2023-08-26 12:12:38,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511939852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:38,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:38,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:12:38,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576380937] [2023-08-26 12:12:38,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:12:38,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:12:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:12:38,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 165 [2023-08-26 12:12:38,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:38,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 165 [2023-08-26 12:12:38,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:38,543 INFO L124 PetriNetUnfolderBase]: 351/618 cut-off events. [2023-08-26 12:12:38,544 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2023-08-26 12:12:38,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 618 events. 351/618 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2908 event pairs, 52 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 2140. Up to 293 conditions per place. [2023-08-26 12:12:38,547 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 35 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-08-26 12:12:38,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 427 flow [2023-08-26 12:12:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:12:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:12:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-26 12:12:38,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-26 12:12:38,548 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-26 12:12:38,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-26 12:12:38,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:38,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-26 12:12:38,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,550 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 246 flow. Second operand 4 states and 352 transitions. [2023-08-26 12:12:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 427 flow [2023-08-26 12:12:38,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:12:38,555 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 315 flow [2023-08-26 12:12:38,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-26 12:12:38,556 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-26 12:12:38,556 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 315 flow [2023-08-26 12:12:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:38,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:12:38,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:38,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1078951519, now seen corresponding path program 1 times [2023-08-26 12:12:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13623247] [2023-08-26 12:12:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13623247] [2023-08-26 12:12:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13623247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:38,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:12:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228118970] [2023-08-26 12:12:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:38,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:12:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:12:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:12:38,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:12:38,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:38,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:12:38,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:38,738 INFO L124 PetriNetUnfolderBase]: 557/901 cut-off events. [2023-08-26 12:12:38,738 INFO L125 PetriNetUnfolderBase]: For 2820/2820 co-relation queries the response was YES. [2023-08-26 12:12:38,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 901 events. 557/901 cut-off events. For 2820/2820 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3861 event pairs, 69 based on Foata normal form. 11/912 useless extension candidates. Maximal degree in co-relation 3447. Up to 283 conditions per place. [2023-08-26 12:12:38,742 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 48 selfloop transitions, 28 changer transitions 3/79 dead transitions. [2023-08-26 12:12:38,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 775 flow [2023-08-26 12:12:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:12:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:12:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2023-08-26 12:12:38,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236363636363637 [2023-08-26 12:12:38,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2023-08-26 12:12:38,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2023-08-26 12:12:38,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:38,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2023-08-26 12:12:38,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,746 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 315 flow. Second operand 5 states and 432 transitions. [2023-08-26 12:12:38,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 775 flow [2023-08-26 12:12:38,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:12:38,751 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 595 flow [2023-08-26 12:12:38,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-08-26 12:12:38,751 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-26 12:12:38,752 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 595 flow [2023-08-26 12:12:38,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:38,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:38,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:12:38,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:38,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1061385028, now seen corresponding path program 1 times [2023-08-26 12:12:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441902044] [2023-08-26 12:12:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:38,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441902044] [2023-08-26 12:12:38,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441902044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:38,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:38,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:12:38,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258376666] [2023-08-26 12:12:38,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:38,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:12:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:12:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:12:38,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:12:38,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 595 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:38,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:12:38,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:38,932 INFO L124 PetriNetUnfolderBase]: 575/952 cut-off events. [2023-08-26 12:12:38,933 INFO L125 PetriNetUnfolderBase]: For 4792/4792 co-relation queries the response was YES. [2023-08-26 12:12:38,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 952 events. 575/952 cut-off events. For 4792/4792 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4325 event pairs, 122 based on Foata normal form. 33/985 useless extension candidates. Maximal degree in co-relation 4107. Up to 404 conditions per place. [2023-08-26 12:12:38,936 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 33 selfloop transitions, 9 changer transitions 35/77 dead transitions. [2023-08-26 12:12:38,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 912 flow [2023-08-26 12:12:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:12:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:12:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-08-26 12:12:38,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115151515151515 [2023-08-26 12:12:38,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-08-26 12:12:38,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-08-26 12:12:38,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:38,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-08-26 12:12:38,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,940 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 595 flow. Second operand 5 states and 422 transitions. [2023-08-26 12:12:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 912 flow [2023-08-26 12:12:38,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 912 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:12:38,949 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 309 flow [2023-08-26 12:12:38,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-08-26 12:12:38,950 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-26 12:12:38,950 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 309 flow [2023-08-26 12:12:38,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:38,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:38,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:12:38,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:38,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash 895844492, now seen corresponding path program 1 times [2023-08-26 12:12:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:38,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23698958] [2023-08-26 12:12:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23698958] [2023-08-26 12:12:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23698958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:39,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:12:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701447580] [2023-08-26 12:12:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:12:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:12:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:12:39,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:12:39,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:12:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:39,082 INFO L124 PetriNetUnfolderBase]: 167/341 cut-off events. [2023-08-26 12:12:39,082 INFO L125 PetriNetUnfolderBase]: For 2255/2279 co-relation queries the response was YES. [2023-08-26 12:12:39,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 341 events. 167/341 cut-off events. For 2255/2279 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1562 event pairs, 31 based on Foata normal form. 16/351 useless extension candidates. Maximal degree in co-relation 1506. Up to 189 conditions per place. [2023-08-26 12:12:39,083 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 37 selfloop transitions, 8 changer transitions 6/61 dead transitions. [2023-08-26 12:12:39,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 708 flow [2023-08-26 12:12:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:12:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:12:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-08-26 12:12:39,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321212121212121 [2023-08-26 12:12:39,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-08-26 12:12:39,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-08-26 12:12:39,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:39,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-08-26 12:12:39,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,087 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 309 flow. Second operand 5 states and 439 transitions. [2023-08-26 12:12:39,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 708 flow [2023-08-26 12:12:39,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 516 flow, removed 28 selfloop flow, removed 12 redundant places. [2023-08-26 12:12:39,090 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 270 flow [2023-08-26 12:12:39,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-26 12:12:39,091 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-26 12:12:39,091 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 270 flow [2023-08-26 12:12:39,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:39,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:39,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:12:39,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:39,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1525271844, now seen corresponding path program 1 times [2023-08-26 12:12:39,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:39,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008141539] [2023-08-26 12:12:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:39,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008141539] [2023-08-26 12:12:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008141539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:39,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:12:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291273718] [2023-08-26 12:12:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:12:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:12:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:12:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:12:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:12:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:39,225 INFO L124 PetriNetUnfolderBase]: 153/325 cut-off events. [2023-08-26 12:12:39,225 INFO L125 PetriNetUnfolderBase]: For 1012/1095 co-relation queries the response was YES. [2023-08-26 12:12:39,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 325 events. 153/325 cut-off events. For 1012/1095 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1545 event pairs, 11 based on Foata normal form. 51/369 useless extension candidates. Maximal degree in co-relation 1426. Up to 161 conditions per place. [2023-08-26 12:12:39,227 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 15 changer transitions 13/76 dead transitions. [2023-08-26 12:12:39,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 716 flow [2023-08-26 12:12:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 12:12:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 12:12:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2023-08-26 12:12:39,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298701298701298 [2023-08-26 12:12:39,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2023-08-26 12:12:39,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2023-08-26 12:12:39,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:39,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2023-08-26 12:12:39,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,231 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 270 flow. Second operand 7 states and 612 transitions. [2023-08-26 12:12:39,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 716 flow [2023-08-26 12:12:39,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:12:39,234 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 357 flow [2023-08-26 12:12:39,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-26 12:12:39,235 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2023-08-26 12:12:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 357 flow [2023-08-26 12:12:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:12:39,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:12:39,235 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:12:39,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:12:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1001607994, now seen corresponding path program 1 times [2023-08-26 12:12:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:12:39,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950408699] [2023-08-26 12:12:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:12:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:12:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:12:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:12:39,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:12:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950408699] [2023-08-26 12:12:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950408699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:12:39,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:12:39,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:12:39,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211308450] [2023-08-26 12:12:39,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:12:39,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 12:12:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:12:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 12:12:39,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 12:12:39,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:12:39,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:12:39,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:12:39,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:12:39,420 INFO L124 PetriNetUnfolderBase]: 138/301 cut-off events. [2023-08-26 12:12:39,420 INFO L125 PetriNetUnfolderBase]: For 1270/1343 co-relation queries the response was YES. [2023-08-26 12:12:39,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 301 events. 138/301 cut-off events. For 1270/1343 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1458 event pairs, 10 based on Foata normal form. 45/339 useless extension candidates. Maximal degree in co-relation 1524. Up to 143 conditions per place. [2023-08-26 12:12:39,421 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-08-26 12:12:39,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 745 flow [2023-08-26 12:12:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 12:12:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 12:12:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 769 transitions. [2023-08-26 12:12:39,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178451178451179 [2023-08-26 12:12:39,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 769 transitions. [2023-08-26 12:12:39,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 769 transitions. [2023-08-26 12:12:39,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:12:39,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 769 transitions. [2023-08-26 12:12:39,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.44444444444444) internal successors, (769), 9 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,426 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 357 flow. Second operand 9 states and 769 transitions. [2023-08-26 12:12:39,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 745 flow [2023-08-26 12:12:39,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 664 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-08-26 12:12:39,430 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-26 12:12:39,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-08-26 12:12:39,430 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-26 12:12:39,430 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-26 12:12:39,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:12:39,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (3 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 12:12:39,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 12:12:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:12:39,433 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:12:39,435 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:12:39,435 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:12:39,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:12:39 BasicIcfg [2023-08-26 12:12:39,437 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:12:39,437 INFO L158 Benchmark]: Toolchain (without parser) took 4836.43ms. Allocated memory was 329.3MB in the beginning and 396.4MB in the end (delta: 67.1MB). Free memory was 284.9MB in the beginning and 174.0MB in the end (delta: 110.9MB). Peak memory consumption was 179.7MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 329.3MB. Free memory was 306.9MB in the beginning and 306.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.70ms. Allocated memory is still 329.3MB. Free memory was 284.9MB in the beginning and 264.6MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 329.3MB. Free memory was 264.6MB in the beginning and 262.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 329.3MB. Free memory was 262.5MB in the beginning and 260.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: RCFGBuilder took 369.85ms. Allocated memory is still 329.3MB. Free memory was 260.4MB in the beginning and 244.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,438 INFO L158 Benchmark]: TraceAbstraction took 4048.60ms. Allocated memory was 329.3MB in the beginning and 396.4MB in the end (delta: 67.1MB). Free memory was 243.6MB in the beginning and 174.0MB in the end (delta: 69.6MB). Peak memory consumption was 137.7MB. Max. memory is 16.0GB. [2023-08-26 12:12:39,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 329.3MB. Free memory was 306.9MB in the beginning and 306.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 338.70ms. Allocated memory is still 329.3MB. Free memory was 284.9MB in the beginning and 264.6MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 329.3MB. Free memory was 264.6MB in the beginning and 262.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 329.3MB. Free memory was 262.5MB in the beginning and 260.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 369.85ms. Allocated memory is still 329.3MB. Free memory was 260.4MB in the beginning and 244.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4048.60ms. Allocated memory was 329.3MB in the beginning and 396.4MB in the end (delta: 67.1MB). Free memory was 243.6MB in the beginning and 174.0MB in the end (delta: 69.6MB). Peak memory consumption was 137.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 86 PlacesBefore, 33 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1222, independent: 1146, independent conditional: 0, independent unconditional: 1146, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 621, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1222, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: 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 7 procedures, 116 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 20 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=595occurred in iteration=6, InterpolantAutomatonStates: 48, 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, 0.9s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:12:39,452 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...