/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:25:09,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:25:09,129 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 12:25:09,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:25:09,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:25:09,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:25:09,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:25:09,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:25:09,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:25:09,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:25:09,162 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:25:09,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:25:09,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:25:09,163 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:25:09,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:25:09,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:25:09,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:25:09,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:25:09,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:25:09,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:25:09,164 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:25:09,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:25:09,165 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:25:09,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:25:09,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:25:09,165 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:25:09,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:25:09,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:25:09,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:25:09,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:25:09,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:25:09,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:25:09,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:25:09,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:25:09,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:25:09,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:25:09,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:25:09,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:25:09,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:25:09,436 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:25:09,436 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:25:09,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2023-08-26 12:25:10,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:25:10,635 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:25:10,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2023-08-26 12:25:10,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa8f731e/2b9fa8539db24318b4644542d351f6df/FLAGe2e714412 [2023-08-26 12:25:10,667 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa8f731e/2b9fa8539db24318b4644542d351f6df [2023-08-26 12:25:10,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:25:10,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:25:10,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:25:10,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:25:10,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:25:10,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:25:10" (1/1) ... [2023-08-26 12:25:10,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49788d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:10, skipping insertion in model container [2023-08-26 12:25:10,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:25:10" (1/1) ... [2023-08-26 12:25:10,720 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:25:11,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:25:11,031 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:25:11,055 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:25:11,057 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:25:11,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:25:11,104 WARN L669 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:25:11,108 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:25:11,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11 WrapperNode [2023-08-26 12:25:11,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:25:11,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:25:11,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:25:11,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:25:11,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,145 INFO L138 Inliner]: procedures = 271, calls = 46, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 111 [2023-08-26 12:25:11,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:25:11,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:25:11,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:25:11,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:25:11,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:25:11,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:25:11,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:25:11,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:25:11,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (1/1) ... [2023-08-26 12:25:11,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:25:11,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:25:11,197 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 12:25:11,207 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 12:25:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-08-26 12:25:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-08-26 12:25:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-08-26 12:25:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-08-26 12:25:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-08-26 12:25:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:25:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:25:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:25:11,224 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 12:25:11,443 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:25:11,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:25:11,640 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:25:11,647 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:25:11,648 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 12:25:11,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:25:11 BoogieIcfgContainer [2023-08-26 12:25:11,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:25:11,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:25:11,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:25:11,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:25:11,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:25:10" (1/3) ... [2023-08-26 12:25:11,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6af5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:25:11, skipping insertion in model container [2023-08-26 12:25:11,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:25:11" (2/3) ... [2023-08-26 12:25:11,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6af5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:25:11, skipping insertion in model container [2023-08-26 12:25:11,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:25:11" (3/3) ... [2023-08-26 12:25:11,655 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2023-08-26 12:25:11,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:25:11,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 12:25:11,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:25:11,719 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:25:11,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 347 flow [2023-08-26 12:25:11,807 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-26 12:25:11,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:25:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 14/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-26 12:25:11,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 347 flow [2023-08-26 12:25:11,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 163 transitions, 335 flow [2023-08-26 12:25:11,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:25:11,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 163 transitions, 335 flow [2023-08-26 12:25:11,866 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 163 transitions, 335 flow [2023-08-26 12:25:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 335 flow [2023-08-26 12:25:11,894 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-26 12:25:11,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:25:11,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 14/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-26 12:25:11,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 10214 [2023-08-26 12:25:15,186 INFO L134 LiptonReduction]: Checked pairs total: 21085 [2023-08-26 12:25:15,186 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-26 12:25:15,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:25:15,198 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;@6b2e3ab3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:25:15,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-26 12:25:15,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:25:15,199 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:25:15,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:25:15,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:15,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:25:15,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:15,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 648, now seen corresponding path program 1 times [2023-08-26 12:25:15,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:15,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993136044] [2023-08-26 12:25:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:15,338 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 12:25:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993136044] [2023-08-26 12:25:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993136044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:25:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031121704] [2023-08-26 12:25:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:15,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:25:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:25:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:25:15,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 315 [2023-08-26 12:25:15,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 115 flow. Second operand has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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 12:25:15,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:15,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 315 [2023-08-26 12:25:15,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:16,106 INFO L124 PetriNetUnfolderBase]: 10232/13985 cut-off events. [2023-08-26 12:25:16,107 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 12:25:16,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27553 conditions, 13985 events. 10232/13985 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 69162 event pairs, 7648 based on Foata normal form. 300/11206 useless extension candidates. Maximal degree in co-relation 27542. Up to 13452 conditions per place. [2023-08-26 12:25:16,230 INFO L140 encePairwiseOnDemand]: 310/315 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-26 12:25:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 189 flow [2023-08-26 12:25:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:25:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:25:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 349 transitions. [2023-08-26 12:25:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553968253968254 [2023-08-26 12:25:16,242 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 349 transitions. [2023-08-26 12:25:16,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 349 transitions. [2023-08-26 12:25:16,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:16,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 349 transitions. [2023-08-26 12:25:16,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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 12:25:16,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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 12:25:16,250 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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 12:25:16,251 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 115 flow. Second operand 2 states and 349 transitions. [2023-08-26 12:25:16,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 189 flow [2023-08-26 12:25:16,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 12:25:16,255 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 102 flow [2023-08-26 12:25:16,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-26 12:25:16,258 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-26 12:25:16,259 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 102 flow [2023-08-26 12:25:16,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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 12:25:16,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:16,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:25:16,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:25:16,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:16,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash 636829, now seen corresponding path program 1 times [2023-08-26 12:25:16,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:16,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432780726] [2023-08-26 12:25:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:16,439 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 12:25:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432780726] [2023-08-26 12:25:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432780726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:25:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557111002] [2023-08-26 12:25:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:16,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 12:25:16,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 12:25:16,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 12:25:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:17,196 INFO L124 PetriNetUnfolderBase]: 10227/13914 cut-off events. [2023-08-26 12:25:17,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:25:17,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 13914 events. 10227/13914 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68704 event pairs, 6884 based on Foata normal form. 0/10851 useless extension candidates. Maximal degree in co-relation 27467. Up to 12161 conditions per place. [2023-08-26 12:25:17,242 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-26 12:25:17,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 270 flow [2023-08-26 12:25:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-26 12:25:17,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835978835978836 [2023-08-26 12:25:17,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-26 12:25:17,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-26 12:25:17,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:17,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-26 12:25:17,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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 12:25:17,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:17,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:17,248 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 102 flow. Second operand 3 states and 457 transitions. [2023-08-26 12:25:17,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 270 flow [2023-08-26 12:25:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:25:17,249 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 104 flow [2023-08-26 12:25:17,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-26 12:25:17,250 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-26 12:25:17,250 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 104 flow [2023-08-26 12:25:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 12:25:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:17,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:25:17,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:25:17,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:17,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash 636830, now seen corresponding path program 1 times [2023-08-26 12:25:17,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:17,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116834776] [2023-08-26 12:25:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:17,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:17,330 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 12:25:17,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116834776] [2023-08-26 12:25:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116834776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:17,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:25:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25682453] [2023-08-26 12:25:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:17,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:17,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 12:25:17,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 12:25:17,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:17,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 12:25:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:17,937 INFO L124 PetriNetUnfolderBase]: 10222/13903 cut-off events. [2023-08-26 12:25:17,937 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 12:25:17,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27751 conditions, 13903 events. 10222/13903 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68548 event pairs, 6880 based on Foata normal form. 0/11146 useless extension candidates. Maximal degree in co-relation 27747. Up to 12151 conditions per place. [2023-08-26 12:25:17,987 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 60 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-26 12:25:17,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 270 flow [2023-08-26 12:25:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-26 12:25:17,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-26 12:25:17,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-26 12:25:17,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-26 12:25:17,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:17,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-26 12:25:17,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 12:25:17,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:17,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:17,992 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 104 flow. Second operand 3 states and 465 transitions. [2023-08-26 12:25:17,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 270 flow [2023-08-26 12:25:17,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:17,995 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 102 flow [2023-08-26 12:25:17,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-26 12:25:17,996 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-26 12:25:17,996 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 102 flow [2023-08-26 12:25:17,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 12:25:17,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:17,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:25:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:25:17,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:17,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash 612006722, now seen corresponding path program 1 times [2023-08-26 12:25:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:17,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267084913] [2023-08-26 12:25:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:18,042 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 12:25:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267084913] [2023-08-26 12:25:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267084913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:18,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:25:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953784077] [2023-08-26 12:25:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:18,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 12:25:18,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 12:25:18,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:18,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 12:25:18,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:18,568 INFO L124 PetriNetUnfolderBase]: 10119/13733 cut-off events. [2023-08-26 12:25:18,568 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 12:25:18,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27428 conditions, 13733 events. 10119/13733 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 67415 event pairs, 6797 based on Foata normal form. 0/11041 useless extension candidates. Maximal degree in co-relation 27424. Up to 11998 conditions per place. [2023-08-26 12:25:18,616 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 59 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-26 12:25:18,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 266 flow [2023-08-26 12:25:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-26 12:25:18,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-26 12:25:18,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-26 12:25:18,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-26 12:25:18,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:18,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-26 12:25:18,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 12:25:18,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:18,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:18,621 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 102 flow. Second operand 3 states and 455 transitions. [2023-08-26 12:25:18,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 266 flow [2023-08-26 12:25:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:18,624 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 100 flow [2023-08-26 12:25:18,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-26 12:25:18,624 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-26 12:25:18,624 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 100 flow [2023-08-26 12:25:18,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 12:25:18,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:18,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:25:18,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:25:18,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:18,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 612006723, now seen corresponding path program 1 times [2023-08-26 12:25:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468946206] [2023-08-26 12:25:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:18,683 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 12:25:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468946206] [2023-08-26 12:25:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468946206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:18,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:25:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848033168] [2023-08-26 12:25:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:18,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:18,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 12:25:18,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 12:25:18,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:18,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 12:25:18,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:19,275 INFO L124 PetriNetUnfolderBase]: 10016/13563 cut-off events. [2023-08-26 12:25:19,276 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 12:25:19,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27105 conditions, 13563 events. 10016/13563 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 66343 event pairs, 6714 based on Foata normal form. 0/10936 useless extension candidates. Maximal degree in co-relation 27101. Up to 11845 conditions per place. [2023-08-26 12:25:19,329 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 58 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-26 12:25:19,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 262 flow [2023-08-26 12:25:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-26 12:25:19,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48994708994708996 [2023-08-26 12:25:19,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-26 12:25:19,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-26 12:25:19,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:19,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-26 12:25:19,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 12:25:19,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:19,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:19,334 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 100 flow. Second operand 3 states and 463 transitions. [2023-08-26 12:25:19,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 262 flow [2023-08-26 12:25:19,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:19,338 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 98 flow [2023-08-26 12:25:19,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-26 12:25:19,338 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-26 12:25:19,338 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 98 flow [2023-08-26 12:25:19,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 12:25:19,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:19,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:19,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:25:19,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:19,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 93741888, now seen corresponding path program 1 times [2023-08-26 12:25:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022340067] [2023-08-26 12:25:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:19,449 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 12:25:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022340067] [2023-08-26 12:25:19,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022340067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:19,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:19,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:25:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094400439] [2023-08-26 12:25:19,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:19,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 12:25:19,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 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 12:25:19,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:19,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 12:25:19,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:20,418 INFO L124 PetriNetUnfolderBase]: 23282/30597 cut-off events. [2023-08-26 12:25:20,418 INFO L125 PetriNetUnfolderBase]: For 726/726 co-relation queries the response was YES. [2023-08-26 12:25:20,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62171 conditions, 30597 events. 23282/30597 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 151252 event pairs, 5428 based on Foata normal form. 0/25482 useless extension candidates. Maximal degree in co-relation 62167. Up to 23675 conditions per place. [2023-08-26 12:25:20,537 INFO L140 encePairwiseOnDemand]: 307/315 looper letters, 70 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-08-26 12:25:20,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 322 flow [2023-08-26 12:25:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-26 12:25:20,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-26 12:25:20,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-26 12:25:20,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-26 12:25:20,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:20,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-26 12:25:20,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:25:20,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:20,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:20,543 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 98 flow. Second operand 3 states and 480 transitions. [2023-08-26 12:25:20,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 322 flow [2023-08-26 12:25:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:20,547 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 132 flow [2023-08-26 12:25:20,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-26 12:25:20,548 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-26 12:25:20,548 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 132 flow [2023-08-26 12:25:20,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 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 12:25:20,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:20,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:25:20,549 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:20,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1448124037, now seen corresponding path program 1 times [2023-08-26 12:25:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684125029] [2023-08-26 12:25:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:20,653 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 12:25:20,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684125029] [2023-08-26 12:25:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684125029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:25:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227865122] [2023-08-26 12:25:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:20,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:25:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:25:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:25:20,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 315 [2023-08-26 12:25:20,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:25:20,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:20,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 315 [2023-08-26 12:25:20,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:22,299 INFO L124 PetriNetUnfolderBase]: 34654/47395 cut-off events. [2023-08-26 12:25:22,299 INFO L125 PetriNetUnfolderBase]: For 5751/5841 co-relation queries the response was YES. [2023-08-26 12:25:22,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102246 conditions, 47395 events. 34654/47395 cut-off events. For 5751/5841 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 267176 event pairs, 6548 based on Foata normal form. 2/39476 useless extension candidates. Maximal degree in co-relation 102241. Up to 17361 conditions per place. [2023-08-26 12:25:22,697 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 122 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-08-26 12:25:22,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 135 transitions, 605 flow [2023-08-26 12:25:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:25:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:25:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2023-08-26 12:25:22,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276190476190477 [2023-08-26 12:25:22,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2023-08-26 12:25:22,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2023-08-26 12:25:22,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:22,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2023-08-26 12:25:22,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:25:22,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:22,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:22,704 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 132 flow. Second operand 5 states and 831 transitions. [2023-08-26 12:25:22,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 135 transitions, 605 flow [2023-08-26 12:25:22,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 135 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:25:22,710 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 182 flow [2023-08-26 12:25:22,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-08-26 12:25:22,711 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-26 12:25:22,711 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 182 flow [2023-08-26 12:25:22,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:25:22,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:22,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:22,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:25:22,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:22,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 320965854, now seen corresponding path program 1 times [2023-08-26 12:25:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865197758] [2023-08-26 12:25:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:22,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:22,776 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 12:25:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:22,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865197758] [2023-08-26 12:25:22,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865197758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:22,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:22,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:25:22,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898694859] [2023-08-26 12:25:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:25:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:25:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:25:22,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 12:25:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 12:25:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 12:25:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:26,445 INFO L124 PetriNetUnfolderBase]: 53365/74522 cut-off events. [2023-08-26 12:25:26,445 INFO L125 PetriNetUnfolderBase]: For 30176/31661 co-relation queries the response was YES. [2023-08-26 12:25:26,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178559 conditions, 74522 events. 53365/74522 cut-off events. For 30176/31661 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 486300 event pairs, 13804 based on Foata normal form. 1769/68120 useless extension candidates. Maximal degree in co-relation 178551. Up to 42623 conditions per place. [2023-08-26 12:25:26,757 INFO L140 encePairwiseOnDemand]: 303/315 looper letters, 68 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2023-08-26 12:25:26,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 468 flow [2023-08-26 12:25:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:25:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:25:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-26 12:25:26,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417989417989416 [2023-08-26 12:25:26,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-26 12:25:26,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-26 12:25:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-26 12:25:26,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 12:25:26,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:26,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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 12:25:26,762 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 182 flow. Second operand 3 states and 467 transitions. [2023-08-26 12:25:26,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 468 flow [2023-08-26 12:25:26,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:25:26,771 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 271 flow [2023-08-26 12:25:26,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-26 12:25:26,772 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-26 12:25:26,772 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 271 flow [2023-08-26 12:25:26,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 12:25:26,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:26,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:26,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:25:26,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:26,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash -498795403, now seen corresponding path program 1 times [2023-08-26 12:25:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085142657] [2023-08-26 12:25:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:26,989 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 12:25:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:26,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085142657] [2023-08-26 12:25:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085142657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:25:26,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129369628] [2023-08-26 12:25:26,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:26,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:25:26,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:25:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:25:26,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 12:25:26,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 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 12:25:26,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:26,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 12:25:26,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:32,046 INFO L124 PetriNetUnfolderBase]: 79972/107174 cut-off events. [2023-08-26 12:25:32,046 INFO L125 PetriNetUnfolderBase]: For 83767/83768 co-relation queries the response was YES. [2023-08-26 12:25:32,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309746 conditions, 107174 events. 79972/107174 cut-off events. For 83767/83768 co-relation queries the response was YES. Maximal size of possible extension queue 2155. Compared 625745 event pairs, 23226 based on Foata normal form. 792/104523 useless extension candidates. Maximal degree in co-relation 309736. Up to 67610 conditions per place. [2023-08-26 12:25:32,551 INFO L140 encePairwiseOnDemand]: 305/315 looper letters, 163 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2023-08-26 12:25:32,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 179 transitions, 1122 flow [2023-08-26 12:25:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:25:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:25:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-08-26 12:25:32,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123809523809524 [2023-08-26 12:25:32,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-08-26 12:25:32,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-08-26 12:25:32,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:32,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-08-26 12:25:32,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 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 12:25:32,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:32,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:32,557 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 271 flow. Second operand 5 states and 807 transitions. [2023-08-26 12:25:32,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 179 transitions, 1122 flow [2023-08-26 12:25:32,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 179 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:25:32,595 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 370 flow [2023-08-26 12:25:32,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-08-26 12:25:32,596 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-26 12:25:32,596 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 370 flow [2023-08-26 12:25:32,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 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 12:25:32,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:32,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:25:32,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:32,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1415063819, now seen corresponding path program 1 times [2023-08-26 12:25:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145999383] [2023-08-26 12:25:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:32,793 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 12:25:32,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145999383] [2023-08-26 12:25:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145999383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:32,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:32,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:25:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413530336] [2023-08-26 12:25:32,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:25:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:25:32,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:25:32,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 315 [2023-08-26 12:25:32,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 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 12:25:32,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:32,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 315 [2023-08-26 12:25:32,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:33,652 INFO L124 PetriNetUnfolderBase]: 8574/13035 cut-off events. [2023-08-26 12:25:33,653 INFO L125 PetriNetUnfolderBase]: For 13436/13848 co-relation queries the response was YES. [2023-08-26 12:25:33,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36199 conditions, 13035 events. 8574/13035 cut-off events. For 13436/13848 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 74598 event pairs, 1532 based on Foata normal form. 1318/14214 useless extension candidates. Maximal degree in co-relation 36187. Up to 10654 conditions per place. [2023-08-26 12:25:33,711 INFO L140 encePairwiseOnDemand]: 307/315 looper letters, 58 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-08-26 12:25:33,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 503 flow [2023-08-26 12:25:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:25:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:25:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-26 12:25:33,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44206349206349205 [2023-08-26 12:25:33,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-26 12:25:33,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-26 12:25:33,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:33,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-26 12:25:33,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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 12:25:33,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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 12:25:33,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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 12:25:33,716 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 370 flow. Second operand 4 states and 557 transitions. [2023-08-26 12:25:33,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 503 flow [2023-08-26 12:25:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 495 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 12:25:33,726 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 315 flow [2023-08-26 12:25:33,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-08-26 12:25:33,726 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-26 12:25:33,726 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 315 flow [2023-08-26 12:25:33,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 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 12:25:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:33,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:25:33,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:33,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -956194407, now seen corresponding path program 1 times [2023-08-26 12:25:33,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:33,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565602686] [2023-08-26 12:25:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:33,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:33,867 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 12:25:33,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:33,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565602686] [2023-08-26 12:25:33,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565602686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:33,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:33,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:25:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971822084] [2023-08-26 12:25:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:25:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:25:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:25:33,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 315 [2023-08-26 12:25:33,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 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 12:25:33,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:33,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 315 [2023-08-26 12:25:33,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:34,415 INFO L124 PetriNetUnfolderBase]: 5686/8861 cut-off events. [2023-08-26 12:25:34,415 INFO L125 PetriNetUnfolderBase]: For 8105/8194 co-relation queries the response was YES. [2023-08-26 12:25:34,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24607 conditions, 8861 events. 5686/8861 cut-off events. For 8105/8194 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 49770 event pairs, 1295 based on Foata normal form. 532/9338 useless extension candidates. Maximal degree in co-relation 24594. Up to 5111 conditions per place. [2023-08-26 12:25:34,445 INFO L140 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2023-08-26 12:25:34,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 565 flow [2023-08-26 12:25:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:25:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:25:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-08-26 12:25:34,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-26 12:25:34,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-08-26 12:25:34,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-08-26 12:25:34,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:34,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-08-26 12:25:34,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 12:25:34,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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 12:25:34,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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 12:25:34,449 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 315 flow. Second operand 4 states and 560 transitions. [2023-08-26 12:25:34,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 565 flow [2023-08-26 12:25:34,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 542 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:34,460 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 333 flow [2023-08-26 12:25:34,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-26 12:25:34,460 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-26 12:25:34,460 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 333 flow [2023-08-26 12:25:34,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 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 12:25:34,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:34,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:34,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:25:34,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:34,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1908296237, now seen corresponding path program 1 times [2023-08-26 12:25:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:34,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757640923] [2023-08-26 12:25:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:34,593 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 12:25:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:34,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757640923] [2023-08-26 12:25:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757640923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:34,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 12:25:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204195280] [2023-08-26 12:25:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 12:25:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 12:25:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-26 12:25:34,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 12:25:34,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 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 12:25:34,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:34,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 12:25:34,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:36,438 INFO L124 PetriNetUnfolderBase]: 16352/23833 cut-off events. [2023-08-26 12:25:36,438 INFO L125 PetriNetUnfolderBase]: For 24357/24358 co-relation queries the response was YES. [2023-08-26 12:25:36,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68325 conditions, 23833 events. 16352/23833 cut-off events. For 24357/24358 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 123361 event pairs, 2739 based on Foata normal form. 1038/24819 useless extension candidates. Maximal degree in co-relation 68312. Up to 5367 conditions per place. [2023-08-26 12:25:36,514 INFO L140 encePairwiseOnDemand]: 299/315 looper letters, 373 selfloop transitions, 64 changer transitions 3/441 dead transitions. [2023-08-26 12:25:36,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 441 transitions, 2840 flow [2023-08-26 12:25:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 12:25:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 12:25:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3412 transitions. [2023-08-26 12:25:36,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709454796411318 [2023-08-26 12:25:36,525 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3412 transitions. [2023-08-26 12:25:36,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3412 transitions. [2023-08-26 12:25:36,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:36,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3412 transitions. [2023-08-26 12:25:36,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 148.34782608695653) internal successors, (3412), 23 states have internal predecessors, (3412), 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 12:25:36,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 315.0) internal successors, (7560), 24 states have internal predecessors, (7560), 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 12:25:36,538 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 315.0) internal successors, (7560), 24 states have internal predecessors, (7560), 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 12:25:36,538 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 333 flow. Second operand 23 states and 3412 transitions. [2023-08-26 12:25:36,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 441 transitions, 2840 flow [2023-08-26 12:25:36,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 441 transitions, 2734 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:25:36,567 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1040 flow [2023-08-26 12:25:36,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1040, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2023-08-26 12:25:36,568 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2023-08-26 12:25:36,568 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1040 flow [2023-08-26 12:25:36,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 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 12:25:36,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:36,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:36,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 12:25:36,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:36,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1330303555, now seen corresponding path program 1 times [2023-08-26 12:25:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086140548] [2023-08-26 12:25:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:36,690 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 12:25:36,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:36,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086140548] [2023-08-26 12:25:36,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086140548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:25:36,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:25:36,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:25:36,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581728020] [2023-08-26 12:25:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:25:36,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:25:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:25:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:25:36,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 315 [2023-08-26 12:25:36,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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 12:25:36,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:36,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 315 [2023-08-26 12:25:36,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:38,368 INFO L124 PetriNetUnfolderBase]: 16294/23705 cut-off events. [2023-08-26 12:25:38,368 INFO L125 PetriNetUnfolderBase]: For 118323/118324 co-relation queries the response was YES. [2023-08-26 12:25:38,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90603 conditions, 23705 events. 16294/23705 cut-off events. For 118323/118324 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 124157 event pairs, 6889 based on Foata normal form. 35/23723 useless extension candidates. Maximal degree in co-relation 90571. Up to 11288 conditions per place. [2023-08-26 12:25:38,525 INFO L140 encePairwiseOnDemand]: 306/315 looper letters, 169 selfloop transitions, 24 changer transitions 0/194 dead transitions. [2023-08-26 12:25:38,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 2020 flow [2023-08-26 12:25:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:25:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:25:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2023-08-26 12:25:38,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876190476190476 [2023-08-26 12:25:38,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2023-08-26 12:25:38,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2023-08-26 12:25:38,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:38,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2023-08-26 12:25:38,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:25:38,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:38,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 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 12:25:38,531 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1040 flow. Second operand 5 states and 768 transitions. [2023-08-26 12:25:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 2020 flow [2023-08-26 12:25:38,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 194 transitions, 1988 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-26 12:25:38,982 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 1087 flow [2023-08-26 12:25:38,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1087, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2023-08-26 12:25:38,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-08-26 12:25:38,983 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 1087 flow [2023-08-26 12:25:38,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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 12:25:38,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:25:38,983 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:38,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 12:25:38,983 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:25:38,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:25:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash -686433180, now seen corresponding path program 1 times [2023-08-26 12:25:38,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:25:38,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102749582] [2023-08-26 12:25:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:25:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 12:25:39,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:25:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102749582] [2023-08-26 12:25:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102749582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:25:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682682889] [2023-08-26 12:25:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:25:39,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:25:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:25:39,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 12:25:39,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 12:25:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:25:39,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 12:25:39,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:25:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 12:25:39,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:25:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 12:25:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682682889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:25:39,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:25:39,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2023-08-26 12:25:39,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015940781] [2023-08-26 12:25:39,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:25:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 12:25:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:25:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 12:25:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-26 12:25:39,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 315 [2023-08-26 12:25:39,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 1087 flow. Second operand has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 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 12:25:39,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:25:39,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 315 [2023-08-26 12:25:39,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:25:41,152 INFO L124 PetriNetUnfolderBase]: 11525/17038 cut-off events. [2023-08-26 12:25:41,152 INFO L125 PetriNetUnfolderBase]: For 98308/98309 co-relation queries the response was YES. [2023-08-26 12:25:41,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59493 conditions, 17038 events. 11525/17038 cut-off events. For 98308/98309 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 87686 event pairs, 2337 based on Foata normal form. 996/18031 useless extension candidates. Maximal degree in co-relation 59459. Up to 5560 conditions per place. [2023-08-26 12:25:41,200 INFO L140 encePairwiseOnDemand]: 299/315 looper letters, 0 selfloop transitions, 0 changer transitions 277/277 dead transitions. [2023-08-26 12:25:41,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 277 transitions, 2489 flow [2023-08-26 12:25:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 12:25:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 12:25:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2279 transitions. [2023-08-26 12:25:41,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521825396825397 [2023-08-26 12:25:41,204 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2279 transitions. [2023-08-26 12:25:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2279 transitions. [2023-08-26 12:25:41,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:25:41,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2279 transitions. [2023-08-26 12:25:41,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 142.4375) internal successors, (2279), 16 states have internal predecessors, (2279), 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 12:25:41,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 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 12:25:41,222 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 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 12:25:41,222 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 1087 flow. Second operand 16 states and 2279 transitions. [2023-08-26 12:25:41,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 277 transitions, 2489 flow [2023-08-26 12:25:41,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 277 transitions, 2380 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-26 12:25:41,410 INFO L231 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2023-08-26 12:25:41,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2023-08-26 12:25:41,410 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2023-08-26 12:25:41,410 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2023-08-26 12:25:41,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 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 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-26 12:25:41,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (5 of 12 remaining) [2023-08-26 12:25:41,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-08-26 12:25:41,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-26 12:25:41,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-26 12:25:41,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONASSERT (1 of 12 remaining) [2023-08-26 12:25:41,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONASSERT (0 of 12 remaining) [2023-08-26 12:25:41,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 12:25:41,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 12:25:41,619 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:25:41,623 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:25:41,623 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:25:41,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:25:41 BasicIcfg [2023-08-26 12:25:41,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:25:41,625 INFO L158 Benchmark]: Toolchain (without parser) took 30952.88ms. Allocated memory was 383.8MB in the beginning and 11.9GB in the end (delta: 11.6GB). Free memory was 358.4MB in the beginning and 10.3GB in the end (delta: -9.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-08-26 12:25:41,625 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:25:41,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.00ms. Allocated memory is still 383.8MB. Free memory was 358.4MB in the beginning and 328.1MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 12:25:41,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.32ms. Allocated memory is still 383.8MB. Free memory was 328.1MB in the beginning and 325.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:25:41,626 INFO L158 Benchmark]: Boogie Preprocessor took 24.12ms. Allocated memory is still 383.8MB. Free memory was 325.6MB in the beginning and 322.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 12:25:41,626 INFO L158 Benchmark]: RCFGBuilder took 479.23ms. Allocated memory is still 383.8MB. Free memory was 322.8MB in the beginning and 299.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-26 12:25:41,626 INFO L158 Benchmark]: TraceAbstraction took 29973.41ms. Allocated memory was 383.8MB in the beginning and 11.9GB in the end (delta: 11.6GB). Free memory was 298.9MB in the beginning and 10.3GB in the end (delta: -10.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-26 12:25:41,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.00ms. Allocated memory is still 383.8MB. Free memory was 358.4MB in the beginning and 328.1MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.32ms. Allocated memory is still 383.8MB. Free memory was 328.1MB in the beginning and 325.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.12ms. Allocated memory is still 383.8MB. Free memory was 325.6MB in the beginning and 322.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 479.23ms. Allocated memory is still 383.8MB. Free memory was 322.8MB in the beginning and 299.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 29973.41ms. Allocated memory was 383.8MB in the beginning and 11.9GB in the end (delta: 11.6GB). Free memory was 298.9MB in the beginning and 10.3GB in the end (delta: -10.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 159 PlacesBefore, 56 PlacesAfterwards, 163 TransitionsBefore, 53 TransitionsAfterwards, 10214 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 21085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9635, independent: 9281, independent conditional: 0, independent unconditional: 9281, dependent: 354, dependent conditional: 0, dependent unconditional: 354, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5131, independent: 5072, independent conditional: 0, independent unconditional: 5072, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9635, independent: 4209, independent conditional: 0, independent unconditional: 4209, dependent: 295, dependent conditional: 0, dependent unconditional: 295, unknown: 5131, unknown conditional: 0, unknown unconditional: 5131] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 200, Positive conditional cache size: 0, Positive unconditional cache size: 200, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, 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: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 223 locations, 12 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: 29.9s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 997 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 997 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2772 IncrementalHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 14 mSDtfsCounter, 2772 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1087occurred in iteration=13, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 1484 SizeOfPredicates, 8 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 18/24 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:25:41,648 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...