/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 11:29:18,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 11:29:18,529 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 11:29:18,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 11:29:18,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 11:29:18,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 11:29:18,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 11:29:18,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 11:29:18,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 11:29:18,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 11:29:18,576 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 11:29:18,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 11:29:18,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 11:29:18,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 11:29:18,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 11:29:18,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 11:29:18,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 11:29:18,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 11:29:18,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 11:29:18,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 11:29:18,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 11:29:18,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 11:29:18,584 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 11:29:18,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 11:29:18,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 11:29:18,589 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 11:29:18,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 11:29:18,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:29:18,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 11:29:18,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 11:29:18,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 11:29:18,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 11:29:18,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 11:29:18,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 11:29:18,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 11:29:18,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 11:29:18,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 11:29:18,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 11:29:18,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 11:29:18,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 11:29:18,902 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 11:29:18,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2023-08-26 11:29:20,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 11:29:20,358 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 11:29:20,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2023-08-26 11:29:20,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d42f7c42/c95eb5b44ff945d8b4315467a80af4a4/FLAGae1073a6d [2023-08-26 11:29:20,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d42f7c42/c95eb5b44ff945d8b4315467a80af4a4 [2023-08-26 11:29:20,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 11:29:20,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 11:29:20,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 11:29:20,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 11:29:20,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 11:29:20,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:20,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2071deeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20, skipping insertion in model container [2023-08-26 11:29:20,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:20,456 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 11:29:20,596 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 11:29:20,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:29:20,840 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 11:29:20,867 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 11:29:20,871 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [283] [2023-08-26 11:29:20,873 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [283] [2023-08-26 11:29:20,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:29:20,971 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 11:29:20,972 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 11:29:20,972 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 11:29:20,978 INFO L206 MainTranslator]: Completed translation [2023-08-26 11:29:20,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20 WrapperNode [2023-08-26 11:29:20,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 11:29:20,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 11:29:20,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 11:29:20,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 11:29:20,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,045 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-08-26 11:29:21,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 11:29:21,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 11:29:21,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 11:29:21,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 11:29:21,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 11:29:21,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 11:29:21,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 11:29:21,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 11:29:21,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (1/1) ... [2023-08-26 11:29:21,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:29:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:29:21,129 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 11:29:21,148 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 11:29:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 11:29:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 11:29:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 11:29:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 11:29:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 11:29:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-08-26 11:29:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-08-26 11:29:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 11:29:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 11:29:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 11:29:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 11:29:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 11:29:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 11:29:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 11:29:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 11:29:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 11:29:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 11:29:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 11:29:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 11:29:21,179 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 11:29:21,341 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 11:29:21,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 11:29:21,584 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 11:29:21,590 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 11:29:21,591 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 11:29:21,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:29:21 BoogieIcfgContainer [2023-08-26 11:29:21,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 11:29:21,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 11:29:21,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 11:29:21,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 11:29:21,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:29:20" (1/3) ... [2023-08-26 11:29:21,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba27ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:29:21, skipping insertion in model container [2023-08-26 11:29:21,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:29:20" (2/3) ... [2023-08-26 11:29:21,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba27ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:29:21, skipping insertion in model container [2023-08-26 11:29:21,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:29:21" (3/3) ... [2023-08-26 11:29:21,602 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2023-08-26 11:29:21,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 11:29:21,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-26 11:29:21,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 11:29:21,830 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-08-26 11:29:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 242 transitions, 591 flow [2023-08-26 11:29:21,974 INFO L124 PetriNetUnfolderBase]: 7/163 cut-off events. [2023-08-26 11:29:21,975 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 11:29:21,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 163 events. 7/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-08-26 11:29:21,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 242 transitions, 591 flow [2023-08-26 11:29:21,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 152 transitions, 355 flow [2023-08-26 11:29:21,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 11:29:22,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 152 transitions, 355 flow [2023-08-26 11:29:22,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 152 transitions, 355 flow [2023-08-26 11:29:22,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 152 transitions, 355 flow [2023-08-26 11:29:22,070 INFO L124 PetriNetUnfolderBase]: 5/152 cut-off events. [2023-08-26 11:29:22,070 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 11:29:22,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 152 events. 5/152 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 165 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-08-26 11:29:22,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 2920 [2023-08-26 11:29:25,162 INFO L134 LiptonReduction]: Checked pairs total: 6693 [2023-08-26 11:29:25,162 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-26 11:29:25,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 11:29:25,178 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;@115e62c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 11:29:25,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-08-26 11:29:25,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 11:29:25,179 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 11:29:25,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 11:29:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:25,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 11:29:25,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:25,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash 600, now seen corresponding path program 1 times [2023-08-26 11:29:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390092047] [2023-08-26 11:29:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:25,277 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 11:29:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390092047] [2023-08-26 11:29:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390092047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 11:29:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063238476] [2023-08-26 11:29:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 11:29:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 11:29:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 11:29:25,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 354 [2023-08-26 11:29:25,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 219 flow. Second operand has 2 states, 2 states have (on average 210.5) internal successors, (421), 2 states have internal predecessors, (421), 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 11:29:25,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:25,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 354 [2023-08-26 11:29:25,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:27,632 INFO L124 PetriNetUnfolderBase]: 19439/26668 cut-off events. [2023-08-26 11:29:27,632 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2023-08-26 11:29:27,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53363 conditions, 26668 events. 19439/26668 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 1699. Compared 145113 event pairs, 19095 based on Foata normal form. 0/9488 useless extension candidates. Maximal degree in co-relation 53340. Up to 25309 conditions per place. [2023-08-26 11:29:27,821 INFO L140 encePairwiseOnDemand]: 352/354 looper letters, 63 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2023-08-26 11:29:27,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 82 transitions, 341 flow [2023-08-26 11:29:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 11:29:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 11:29:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 485 transitions. [2023-08-26 11:29:27,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6850282485875706 [2023-08-26 11:29:27,834 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 485 transitions. [2023-08-26 11:29:27,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 485 transitions. [2023-08-26 11:29:27,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:27,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 485 transitions. [2023-08-26 11:29:27,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 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 11:29:27,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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 11:29:27,846 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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 11:29:27,847 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 219 flow. Second operand 2 states and 485 transitions. [2023-08-26 11:29:27,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 82 transitions, 341 flow [2023-08-26 11:29:27,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 307 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-26 11:29:27,866 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 181 flow [2023-08-26 11:29:27,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=181, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-08-26 11:29:27,871 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -13 predicate places. [2023-08-26 11:29:27,871 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 181 flow [2023-08-26 11:29:27,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.5) internal successors, (421), 2 states have internal predecessors, (421), 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 11:29:27,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:27,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 11:29:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 11:29:27,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:27,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 589266, now seen corresponding path program 1 times [2023-08-26 11:29:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218611463] [2023-08-26 11:29:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:29:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218611463] [2023-08-26 11:29:28,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218611463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 11:29:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733434346] [2023-08-26 11:29:28,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:28,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:28,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 354 [2023-08-26 11:29:28,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 11:29:28,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:28,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 354 [2023-08-26 11:29:28,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:29,539 INFO L124 PetriNetUnfolderBase]: 15588/21034 cut-off events. [2023-08-26 11:29:29,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 11:29:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41820 conditions, 21034 events. 15588/21034 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 105234 event pairs, 15321 based on Foata normal form. 0/8274 useless extension candidates. Maximal degree in co-relation 41817. Up to 20487 conditions per place. [2023-08-26 11:29:29,635 INFO L140 encePairwiseOnDemand]: 346/354 looper letters, 77 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-08-26 11:29:29,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 370 flow [2023-08-26 11:29:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-26 11:29:29,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613935969868173 [2023-08-26 11:29:29,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-26 11:29:29,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-26 11:29:29,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:29,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-26 11:29:29,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 11:29:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:29,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:29,643 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 181 flow. Second operand 3 states and 490 transitions. [2023-08-26 11:29:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 370 flow [2023-08-26 11:29:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:29:29,645 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 231 flow [2023-08-26 11:29:29,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-08-26 11:29:29,646 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -9 predicate places. [2023-08-26 11:29:29,647 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 231 flow [2023-08-26 11:29:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 11:29:29,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:29,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 11:29:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 11:29:29,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:29,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 589267, now seen corresponding path program 1 times [2023-08-26 11:29:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592157034] [2023-08-26 11:29:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:29,713 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 11:29:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592157034] [2023-08-26 11:29:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592157034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:29,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:29,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 11:29:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15030911] [2023-08-26 11:29:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:29,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 354 [2023-08-26 11:29:29,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 11:29:29,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:29,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 354 [2023-08-26 11:29:29,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:31,218 INFO L124 PetriNetUnfolderBase]: 15571/21004 cut-off events. [2023-08-26 11:29:31,218 INFO L125 PetriNetUnfolderBase]: For 1650/1650 co-relation queries the response was YES. [2023-08-26 11:29:31,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43437 conditions, 21004 events. 15571/21004 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 105133 event pairs, 13679 based on Foata normal form. 13/9905 useless extension candidates. Maximal degree in co-relation 43432. Up to 20451 conditions per place. [2023-08-26 11:29:31,405 INFO L140 encePairwiseOnDemand]: 351/354 looper letters, 79 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-08-26 11:29:31,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 403 flow [2023-08-26 11:29:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-26 11:29:31,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858757062146893 [2023-08-26 11:29:31,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-26 11:29:31,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-26 11:29:31,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:31,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-26 11:29:31,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 11:29:31,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:31,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:31,412 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 231 flow. Second operand 3 states and 516 transitions. [2023-08-26 11:29:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 403 flow [2023-08-26 11:29:31,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:31,416 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 225 flow [2023-08-26 11:29:31,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2023-08-26 11:29:31,417 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -8 predicate places. [2023-08-26 11:29:31,417 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 225 flow [2023-08-26 11:29:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 11:29:31,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:31,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 11:29:31,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:31,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1303617002, now seen corresponding path program 1 times [2023-08-26 11:29:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808713809] [2023-08-26 11:29:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:31,651 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 11:29:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808713809] [2023-08-26 11:29:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808713809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660820021] [2023-08-26 11:29:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:31,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:31,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 354 [2023-08-26 11:29:31,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 11:29:31,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:31,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 354 [2023-08-26 11:29:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:32,761 INFO L124 PetriNetUnfolderBase]: 15566/20992 cut-off events. [2023-08-26 11:29:32,762 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2023-08-26 11:29:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45041 conditions, 20992 events. 15566/20992 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 105181 event pairs, 13669 based on Foata normal form. 0/9882 useless extension candidates. Maximal degree in co-relation 45035. Up to 20433 conditions per place. [2023-08-26 11:29:32,867 INFO L140 encePairwiseOnDemand]: 350/354 looper letters, 77 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-26 11:29:32,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 387 flow [2023-08-26 11:29:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-26 11:29:32,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455743879472693 [2023-08-26 11:29:32,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-26 11:29:32,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-26 11:29:32,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:32,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-26 11:29:32,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 11:29:32,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:32,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:32,875 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 225 flow. Second operand 3 states and 484 transitions. [2023-08-26 11:29:32,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 387 flow [2023-08-26 11:29:32,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:32,879 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 221 flow [2023-08-26 11:29:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2023-08-26 11:29:32,882 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -10 predicate places. [2023-08-26 11:29:32,882 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 221 flow [2023-08-26 11:29:32,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 11:29:32,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:32,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 11:29:32,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:32,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1303617001, now seen corresponding path program 1 times [2023-08-26 11:29:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936367101] [2023-08-26 11:29:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:33,061 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 11:29:33,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:33,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936367101] [2023-08-26 11:29:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936367101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 11:29:33,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805957356] [2023-08-26 11:29:33,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:33,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 11:29:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 11:29:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 11:29:33,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 354 [2023-08-26 11:29:33,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 11:29:33,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:33,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 354 [2023-08-26 11:29:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:34,261 INFO L124 PetriNetUnfolderBase]: 16241/21660 cut-off events. [2023-08-26 11:29:34,262 INFO L125 PetriNetUnfolderBase]: For 3428/3428 co-relation queries the response was YES. [2023-08-26 11:29:34,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46789 conditions, 21660 events. 16241/21660 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 105764 event pairs, 14263 based on Foata normal form. 0/9963 useless extension candidates. Maximal degree in co-relation 46783. Up to 21353 conditions per place. [2023-08-26 11:29:34,344 INFO L140 encePairwiseOnDemand]: 350/354 looper letters, 78 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-26 11:29:34,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 385 flow [2023-08-26 11:29:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-08-26 11:29:34,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391713747645951 [2023-08-26 11:29:34,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-08-26 11:29:34,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-08-26 11:29:34,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:34,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-08-26 11:29:34,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 11:29:34,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:34,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:34,361 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 221 flow. Second operand 3 states and 416 transitions. [2023-08-26 11:29:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 385 flow [2023-08-26 11:29:34,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:34,365 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 217 flow [2023-08-26 11:29:34,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-26 11:29:34,366 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -12 predicate places. [2023-08-26 11:29:34,366 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 217 flow [2023-08-26 11:29:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 11:29:34,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:34,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 11:29:34,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:34,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 295261035, now seen corresponding path program 1 times [2023-08-26 11:29:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610649882] [2023-08-26 11:29:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:34,642 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 11:29:34,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:34,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610649882] [2023-08-26 11:29:34,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610649882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:34,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:34,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 11:29:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954315009] [2023-08-26 11:29:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:34,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 11:29:34,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 11:29:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-08-26 11:29:34,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 354 [2023-08-26 11:29:34,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 111.375) internal successors, (891), 8 states have internal predecessors, (891), 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 11:29:34,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:34,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 354 [2023-08-26 11:29:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:35,379 INFO L124 PetriNetUnfolderBase]: 10262/13886 cut-off events. [2023-08-26 11:29:35,379 INFO L125 PetriNetUnfolderBase]: For 3424/3424 co-relation queries the response was YES. [2023-08-26 11:29:35,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29526 conditions, 13886 events. 10262/13886 cut-off events. For 3424/3424 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 65898 event pairs, 8375 based on Foata normal form. 1708/7794 useless extension candidates. Maximal degree in co-relation 29520. Up to 13677 conditions per place. [2023-08-26 11:29:35,449 INFO L140 encePairwiseOnDemand]: 344/354 looper letters, 74 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-08-26 11:29:35,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 396 flow [2023-08-26 11:29:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 11:29:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 11:29:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 635 transitions. [2023-08-26 11:29:35,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587570621468927 [2023-08-26 11:29:35,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 635 transitions. [2023-08-26 11:29:35,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 635 transitions. [2023-08-26 11:29:35,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:35,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 635 transitions. [2023-08-26 11:29:35,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 11:29:35,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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 11:29:35,457 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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 11:29:35,457 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 217 flow. Second operand 5 states and 635 transitions. [2023-08-26 11:29:35,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 396 flow [2023-08-26 11:29:35,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 11:29:35,461 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 248 flow [2023-08-26 11:29:35,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2023-08-26 11:29:35,462 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -10 predicate places. [2023-08-26 11:29:35,462 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 248 flow [2023-08-26 11:29:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.375) internal successors, (891), 8 states have internal predecessors, (891), 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 11:29:35,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:35,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:35,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 11:29:35,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:35,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash 4158118, now seen corresponding path program 1 times [2023-08-26 11:29:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:35,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826428213] [2023-08-26 11:29:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:35,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:35,740 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 11:29:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826428213] [2023-08-26 11:29:35,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826428213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:35,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:35,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:29:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475897097] [2023-08-26 11:29:35,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:29:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:29:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:29:35,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:35,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 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 11:29:35,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:35,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:35,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:36,347 INFO L124 PetriNetUnfolderBase]: 6676/9272 cut-off events. [2023-08-26 11:29:36,347 INFO L125 PetriNetUnfolderBase]: For 1224/1224 co-relation queries the response was YES. [2023-08-26 11:29:36,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19809 conditions, 9272 events. 6676/9272 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 42636 event pairs, 5304 based on Foata normal form. 0/4552 useless extension candidates. Maximal degree in co-relation 19802. Up to 9060 conditions per place. [2023-08-26 11:29:36,380 INFO L140 encePairwiseOnDemand]: 347/354 looper letters, 71 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-26 11:29:36,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 394 flow [2023-08-26 11:29:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:29:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:29:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 522 transitions. [2023-08-26 11:29:36,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686440677966102 [2023-08-26 11:29:36,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 522 transitions. [2023-08-26 11:29:36,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 522 transitions. [2023-08-26 11:29:36,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:36,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 522 transitions. [2023-08-26 11:29:36,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 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 11:29:36,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:36,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:36,387 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 248 flow. Second operand 4 states and 522 transitions. [2023-08-26 11:29:36,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 394 flow [2023-08-26 11:29:36,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:36,399 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 245 flow [2023-08-26 11:29:36,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-08-26 11:29:36,400 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -13 predicate places. [2023-08-26 11:29:36,400 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 245 flow [2023-08-26 11:29:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 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 11:29:36,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:36,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:36,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 11:29:36,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:36,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -299002968, now seen corresponding path program 1 times [2023-08-26 11:29:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:36,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933231317] [2023-08-26 11:29:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:36,471 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 11:29:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933231317] [2023-08-26 11:29:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933231317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:36,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901359031] [2023-08-26 11:29:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:36,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 354 [2023-08-26 11:29:36,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 11:29:36,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:36,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 354 [2023-08-26 11:29:36,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:36,750 INFO L124 PetriNetUnfolderBase]: 2195/3279 cut-off events. [2023-08-26 11:29:36,750 INFO L125 PetriNetUnfolderBase]: For 482/482 co-relation queries the response was YES. [2023-08-26 11:29:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 3279 events. 2195/3279 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13724 event pairs, 1667 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 6990. Up to 3088 conditions per place. [2023-08-26 11:29:36,760 INFO L140 encePairwiseOnDemand]: 348/354 looper letters, 65 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-08-26 11:29:36,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 373 flow [2023-08-26 11:29:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-26 11:29:36,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689265536723164 [2023-08-26 11:29:36,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-26 11:29:36,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-26 11:29:36,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:36,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-26 11:29:36,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 11:29:36,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:36,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:36,766 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 245 flow. Second operand 3 states and 498 transitions. [2023-08-26 11:29:36,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 373 flow [2023-08-26 11:29:36,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 365 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 11:29:36,769 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 229 flow [2023-08-26 11:29:36,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-26 11:29:36,769 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -19 predicate places. [2023-08-26 11:29:36,770 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 229 flow [2023-08-26 11:29:36,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 11:29:36,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:36,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 11:29:36,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:36,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash -299002969, now seen corresponding path program 1 times [2023-08-26 11:29:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:36,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233834895] [2023-08-26 11:29:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:36,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:36,824 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 11:29:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233834895] [2023-08-26 11:29:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233834895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234434630] [2023-08-26 11:29:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:36,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:36,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 354 [2023-08-26 11:29:36,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 11:29:36,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:36,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 354 [2023-08-26 11:29:36,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:36,977 INFO L124 PetriNetUnfolderBase]: 520/894 cut-off events. [2023-08-26 11:29:36,977 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-08-26 11:29:36,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 894 events. 520/894 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2927 event pairs, 347 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1966. Up to 777 conditions per place. [2023-08-26 11:29:36,981 INFO L140 encePairwiseOnDemand]: 347/354 looper letters, 61 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-26 11:29:36,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 355 flow [2023-08-26 11:29:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-26 11:29:36,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312617702448211 [2023-08-26 11:29:36,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-26 11:29:36,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-26 11:29:36,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:36,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-26 11:29:36,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 11:29:36,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:36,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:36,987 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 229 flow. Second operand 3 states and 458 transitions. [2023-08-26 11:29:36,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 355 flow [2023-08-26 11:29:36,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:29:36,989 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 226 flow [2023-08-26 11:29:36,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-26 11:29:36,990 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2023-08-26 11:29:36,990 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 226 flow [2023-08-26 11:29:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 11:29:36,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:36,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:36,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 11:29:36,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:36,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash -299002910, now seen corresponding path program 1 times [2023-08-26 11:29:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025667564] [2023-08-26 11:29:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:37,140 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 11:29:37,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025667564] [2023-08-26 11:29:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025667564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724379052] [2023-08-26 11:29:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:37,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 354 [2023-08-26 11:29:37,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 11:29:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:37,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 354 [2023-08-26 11:29:37,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:37,266 INFO L124 PetriNetUnfolderBase]: 516/870 cut-off events. [2023-08-26 11:29:37,266 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-08-26 11:29:37,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 870 events. 516/870 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2742 event pairs, 341 based on Foata normal form. 0/758 useless extension candidates. Maximal degree in co-relation 1940. Up to 785 conditions per place. [2023-08-26 11:29:37,270 INFO L140 encePairwiseOnDemand]: 350/354 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-26 11:29:37,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 350 flow [2023-08-26 11:29:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-26 11:29:37,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387947269303202 [2023-08-26 11:29:37,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-26 11:29:37,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-26 11:29:37,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:37,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-26 11:29:37,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 11:29:37,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:37,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:37,275 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 226 flow. Second operand 3 states and 466 transitions. [2023-08-26 11:29:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 350 flow [2023-08-26 11:29:37,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:37,277 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 220 flow [2023-08-26 11:29:37,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-26 11:29:37,278 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2023-08-26 11:29:37,278 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 220 flow [2023-08-26 11:29:37,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 11:29:37,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:37,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 11:29:37,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:37,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1415772918, now seen corresponding path program 1 times [2023-08-26 11:29:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563489711] [2023-08-26 11:29:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:37,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:37,442 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 11:29:37,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563489711] [2023-08-26 11:29:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563489711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:37,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:37,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:29:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869636222] [2023-08-26 11:29:37,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:37,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:29:37,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:29:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:29:37,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:37,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 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 11:29:37,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:37,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:37,576 INFO L124 PetriNetUnfolderBase]: 496/830 cut-off events. [2023-08-26 11:29:37,577 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-08-26 11:29:37,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 830 events. 496/830 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2540 event pairs, 322 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1864. Up to 757 conditions per place. [2023-08-26 11:29:37,580 INFO L140 encePairwiseOnDemand]: 349/354 looper letters, 60 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-26 11:29:37,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 362 flow [2023-08-26 11:29:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:29:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:29:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-26 11:29:37,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587570621468927 [2023-08-26 11:29:37,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-26 11:29:37,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-26 11:29:37,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:37,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-26 11:29:37,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 11:29:37,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:37,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:37,586 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 220 flow. Second operand 4 states and 508 transitions. [2023-08-26 11:29:37,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 362 flow [2023-08-26 11:29:37,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:37,588 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 220 flow [2023-08-26 11:29:37,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-08-26 11:29:37,589 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-08-26 11:29:37,589 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 220 flow [2023-08-26 11:29:37,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 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 11:29:37,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:37,590 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 11:29:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 11:29:37,590 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:37,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -946843668, now seen corresponding path program 1 times [2023-08-26 11:29:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027973007] [2023-08-26 11:29:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:37,753 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 11:29:37,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027973007] [2023-08-26 11:29:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027973007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:37,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:37,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:29:37,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785799554] [2023-08-26 11:29:37,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:37,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:29:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:29:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:29:37,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:37,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 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 11:29:37,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:37,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:37,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:37,880 INFO L124 PetriNetUnfolderBase]: 448/750 cut-off events. [2023-08-26 11:29:37,880 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-08-26 11:29:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 750 events. 448/750 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2217 event pairs, 293 based on Foata normal form. 0/676 useless extension candidates. Maximal degree in co-relation 1692. Up to 674 conditions per place. [2023-08-26 11:29:37,883 INFO L140 encePairwiseOnDemand]: 347/354 looper letters, 56 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-26 11:29:37,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 350 flow [2023-08-26 11:29:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:29:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:29:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2023-08-26 11:29:37,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573446327683616 [2023-08-26 11:29:37,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2023-08-26 11:29:37,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2023-08-26 11:29:37,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:37,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2023-08-26 11:29:37,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 11:29:37,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:37,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:37,890 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 220 flow. Second operand 4 states and 506 transitions. [2023-08-26 11:29:37,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 350 flow [2023-08-26 11:29:37,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 342 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 11:29:37,892 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 212 flow [2023-08-26 11:29:37,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-26 11:29:37,892 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2023-08-26 11:29:37,893 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 212 flow [2023-08-26 11:29:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 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 11:29:37,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:37,893 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 11:29:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 11:29:37,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:37,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 616313960, now seen corresponding path program 1 times [2023-08-26 11:29:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154107953] [2023-08-26 11:29:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:37,969 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 11:29:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154107953] [2023-08-26 11:29:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154107953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436995050] [2023-08-26 11:29:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 354 [2023-08-26 11:29:37,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 11:29:37,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:37,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 354 [2023-08-26 11:29:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:38,081 INFO L124 PetriNetUnfolderBase]: 412/694 cut-off events. [2023-08-26 11:29:38,081 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-08-26 11:29:38,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 694 events. 412/694 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1985 event pairs, 269 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 1570. Up to 615 conditions per place. [2023-08-26 11:29:38,084 INFO L140 encePairwiseOnDemand]: 350/354 looper letters, 54 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-26 11:29:38,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 324 flow [2023-08-26 11:29:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-26 11:29:38,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331450094161959 [2023-08-26 11:29:38,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-26 11:29:38,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-26 11:29:38,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:38,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-26 11:29:38,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 11:29:38,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:38,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:38,089 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 212 flow. Second operand 3 states and 460 transitions. [2023-08-26 11:29:38,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 324 flow [2023-08-26 11:29:38,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 11:29:38,091 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 204 flow [2023-08-26 11:29:38,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-26 11:29:38,092 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -32 predicate places. [2023-08-26 11:29:38,092 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 204 flow [2023-08-26 11:29:38,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 11:29:38,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:38,093 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 11:29:38,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 11:29:38,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:38,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash 616313961, now seen corresponding path program 1 times [2023-08-26 11:29:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097995077] [2023-08-26 11:29:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:38,204 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 11:29:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097995077] [2023-08-26 11:29:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097995077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 11:29:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127359715] [2023-08-26 11:29:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 11:29:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 11:29:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 11:29:38,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 354 [2023-08-26 11:29:38,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 11:29:38,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:38,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 354 [2023-08-26 11:29:38,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:38,323 INFO L124 PetriNetUnfolderBase]: 376/638 cut-off events. [2023-08-26 11:29:38,323 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-26 11:29:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 638 events. 376/638 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1759 event pairs, 242 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1444. Up to 559 conditions per place. [2023-08-26 11:29:38,326 INFO L140 encePairwiseOnDemand]: 349/354 looper letters, 52 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-26 11:29:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 330 flow [2023-08-26 11:29:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:29:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:29:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-26 11:29:38,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3559322033898305 [2023-08-26 11:29:38,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-26 11:29:38,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-26 11:29:38,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:38,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-26 11:29:38,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 11:29:38,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:38,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 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 11:29:38,332 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 204 flow. Second operand 4 states and 504 transitions. [2023-08-26 11:29:38,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 330 flow [2023-08-26 11:29:38,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:38,334 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 204 flow [2023-08-26 11:29:38,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-08-26 11:29:38,335 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -33 predicate places. [2023-08-26 11:29:38,336 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 204 flow [2023-08-26 11:29:38,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 11:29:38,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:38,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:38,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 11:29:38,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:38,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1691054047, now seen corresponding path program 1 times [2023-08-26 11:29:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667396887] [2023-08-26 11:29:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:39,118 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 11:29:39,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:39,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667396887] [2023-08-26 11:29:39,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667396887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:39,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:39,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 11:29:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501791197] [2023-08-26 11:29:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 11:29:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 11:29:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-08-26 11:29:39,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:39,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 114.33333333333333) internal successors, (1715), 15 states have internal predecessors, (1715), 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 11:29:39,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:39,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:39,427 INFO L124 PetriNetUnfolderBase]: 375/636 cut-off events. [2023-08-26 11:29:39,428 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-08-26 11:29:39,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 636 events. 375/636 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1758 event pairs, 236 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 1441. Up to 547 conditions per place. [2023-08-26 11:29:39,430 INFO L140 encePairwiseOnDemand]: 341/354 looper letters, 49 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2023-08-26 11:29:39,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 367 flow [2023-08-26 11:29:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 11:29:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 11:29:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1181 transitions. [2023-08-26 11:29:39,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33361581920903954 [2023-08-26 11:29:39,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1181 transitions. [2023-08-26 11:29:39,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1181 transitions. [2023-08-26 11:29:39,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:39,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1181 transitions. [2023-08-26 11:29:39,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 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 11:29:39,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 354.0) internal successors, (3894), 11 states have internal predecessors, (3894), 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 11:29:39,441 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 354.0) internal successors, (3894), 11 states have internal predecessors, (3894), 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 11:29:39,441 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 204 flow. Second operand 10 states and 1181 transitions. [2023-08-26 11:29:39,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 367 flow [2023-08-26 11:29:39,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 11:29:39,444 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 248 flow [2023-08-26 11:29:39,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-08-26 11:29:39,444 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-08-26 11:29:39,444 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 248 flow [2023-08-26 11:29:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.33333333333333) internal successors, (1715), 15 states have internal predecessors, (1715), 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 11:29:39,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:39,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 11:29:39,445 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:39,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1563176344, now seen corresponding path program 1 times [2023-08-26 11:29:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878443987] [2023-08-26 11:29:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:40,430 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 11:29:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:40,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878443987] [2023-08-26 11:29:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878443987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 11:29:40,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216507412] [2023-08-26 11:29:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:40,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 11:29:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 11:29:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-08-26 11:29:40,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:40,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 114.4) internal successors, (1716), 15 states have internal predecessors, (1716), 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 11:29:40,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:40,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:40,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:40,762 INFO L124 PetriNetUnfolderBase]: 374/634 cut-off events. [2023-08-26 11:29:40,762 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-08-26 11:29:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 634 events. 374/634 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1751 event pairs, 235 based on Foata normal form. 1/601 useless extension candidates. Maximal degree in co-relation 1464. Up to 547 conditions per place. [2023-08-26 11:29:40,765 INFO L140 encePairwiseOnDemand]: 341/354 looper letters, 49 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2023-08-26 11:29:40,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 416 flow [2023-08-26 11:29:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 11:29:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 11:29:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1293 transitions. [2023-08-26 11:29:40,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3320493066255778 [2023-08-26 11:29:40,769 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1293 transitions. [2023-08-26 11:29:40,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1293 transitions. [2023-08-26 11:29:40,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:40,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1293 transitions. [2023-08-26 11:29:40,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.54545454545455) internal successors, (1293), 11 states have internal predecessors, (1293), 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 11:29:40,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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 11:29:40,778 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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 11:29:40,778 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 248 flow. Second operand 11 states and 1293 transitions. [2023-08-26 11:29:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 416 flow [2023-08-26 11:29:40,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 397 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-26 11:29:40,780 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 285 flow [2023-08-26 11:29:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=285, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2023-08-26 11:29:40,781 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2023-08-26 11:29:40,781 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 285 flow [2023-08-26 11:29:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.4) internal successors, (1716), 15 states have internal predecessors, (1716), 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 11:29:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:40,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:40,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 11:29:40,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:40,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1213830916, now seen corresponding path program 1 times [2023-08-26 11:29:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661668132] [2023-08-26 11:29:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:41,374 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 11:29:41,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661668132] [2023-08-26 11:29:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661668132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:41,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:41,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 11:29:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716771222] [2023-08-26 11:29:41,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:41,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 11:29:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 11:29:41,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-08-26 11:29:41,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:41,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 285 flow. Second operand has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 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 11:29:41,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:41,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:41,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:41,605 INFO L124 PetriNetUnfolderBase]: 373/632 cut-off events. [2023-08-26 11:29:41,605 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-08-26 11:29:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 632 events. 373/632 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1745 event pairs, 234 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 1475. Up to 547 conditions per place. [2023-08-26 11:29:41,608 INFO L140 encePairwiseOnDemand]: 341/354 looper letters, 51 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2023-08-26 11:29:41,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 71 transitions, 464 flow [2023-08-26 11:29:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 11:29:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 11:29:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1518 transitions. [2023-08-26 11:29:41,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32985658409387225 [2023-08-26 11:29:41,613 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1518 transitions. [2023-08-26 11:29:41,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1518 transitions. [2023-08-26 11:29:41,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:41,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1518 transitions. [2023-08-26 11:29:41,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.76923076923077) internal successors, (1518), 13 states have internal predecessors, (1518), 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 11:29:41,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 354.0) internal successors, (4956), 14 states have internal predecessors, (4956), 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 11:29:41,622 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 354.0) internal successors, (4956), 14 states have internal predecessors, (4956), 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 11:29:41,622 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 285 flow. Second operand 13 states and 1518 transitions. [2023-08-26 11:29:41,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 71 transitions, 464 flow [2023-08-26 11:29:41,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 71 transitions, 441 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 11:29:41,625 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 318 flow [2023-08-26 11:29:41,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=318, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-26 11:29:41,626 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -14 predicate places. [2023-08-26 11:29:41,626 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 318 flow [2023-08-26 11:29:41,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 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 11:29:41,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:41,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:41,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 11:29:41,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:41,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1025947689, now seen corresponding path program 1 times [2023-08-26 11:29:41,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:41,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727787410] [2023-08-26 11:29:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:41,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:42,239 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 11:29:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727787410] [2023-08-26 11:29:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727787410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:42,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:42,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 11:29:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768023917] [2023-08-26 11:29:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 11:29:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 11:29:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-08-26 11:29:42,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 354 [2023-08-26 11:29:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 318 flow. Second operand has 15 states, 15 states have (on average 114.53333333333333) internal successors, (1718), 15 states have internal predecessors, (1718), 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 11:29:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 354 [2023-08-26 11:29:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:42,446 INFO L124 PetriNetUnfolderBase]: 373/631 cut-off events. [2023-08-26 11:29:42,446 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-26 11:29:42,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 631 events. 373/631 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1741 event pairs, 234 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 1481. Up to 547 conditions per place. [2023-08-26 11:29:42,449 INFO L140 encePairwiseOnDemand]: 342/354 looper letters, 48 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2023-08-26 11:29:42,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 67 transitions, 456 flow [2023-08-26 11:29:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 11:29:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 11:29:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1401 transitions. [2023-08-26 11:29:42,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298022598870056 [2023-08-26 11:29:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1401 transitions. [2023-08-26 11:29:42,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1401 transitions. [2023-08-26 11:29:42,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:42,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1401 transitions. [2023-08-26 11:29:42,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.75) internal successors, (1401), 12 states have internal predecessors, (1401), 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 11:29:42,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 354.0) internal successors, (4602), 13 states have internal predecessors, (4602), 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 11:29:42,461 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 354.0) internal successors, (4602), 13 states have internal predecessors, (4602), 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 11:29:42,461 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 318 flow. Second operand 12 states and 1401 transitions. [2023-08-26 11:29:42,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 67 transitions, 456 flow [2023-08-26 11:29:42,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 67 transitions, 403 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-26 11:29:42,463 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 281 flow [2023-08-26 11:29:42,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=281, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2023-08-26 11:29:42,464 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -18 predicate places. [2023-08-26 11:29:42,464 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 281 flow [2023-08-26 11:29:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.53333333333333) internal successors, (1718), 15 states have internal predecessors, (1718), 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 11:29:42,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:42,465 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, 1, 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 11:29:42,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 11:29:42,465 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:42,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1315877714, now seen corresponding path program 1 times [2023-08-26 11:29:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794244389] [2023-08-26 11:29:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:42,618 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 11:29:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794244389] [2023-08-26 11:29:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794244389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:42,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:42,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:29:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936945230] [2023-08-26 11:29:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:42,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:29:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:29:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:29:42,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 354 [2023-08-26 11:29:42,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 11:29:42,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:42,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 354 [2023-08-26 11:29:42,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:42,764 INFO L124 PetriNetUnfolderBase]: 590/1006 cut-off events. [2023-08-26 11:29:42,765 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-26 11:29:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 1006 events. 590/1006 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3555 event pairs, 193 based on Foata normal form. 0/945 useless extension candidates. Maximal degree in co-relation 2328. Up to 539 conditions per place. [2023-08-26 11:29:42,768 INFO L140 encePairwiseOnDemand]: 346/354 looper letters, 80 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2023-08-26 11:29:42,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 646 flow [2023-08-26 11:29:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:29:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:29:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-26 11:29:42,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2023-08-26 11:29:42,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-26 11:29:42,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-26 11:29:42,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:42,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-26 11:29:42,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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 11:29:42,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:42,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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 11:29:42,773 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 281 flow. Second operand 3 states and 585 transitions. [2023-08-26 11:29:42,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 646 flow [2023-08-26 11:29:42,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 604 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-26 11:29:42,776 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 311 flow [2023-08-26 11:29:42,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-26 11:29:42,777 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-08-26 11:29:42,777 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 311 flow [2023-08-26 11:29:42,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 11:29:42,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:42,777 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, 1, 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 11:29:42,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 11:29:42,778 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:42,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1972656607, now seen corresponding path program 1 times [2023-08-26 11:29:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841237217] [2023-08-26 11:29:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:29:43,269 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 11:29:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:29:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841237217] [2023-08-26 11:29:43,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841237217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:29:43,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:29:43,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 11:29:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930951358] [2023-08-26 11:29:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:29:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 11:29:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:29:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 11:29:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-26 11:29:43,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 354 [2023-08-26 11:29:43,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 311 flow. Second operand has 14 states, 14 states have (on average 118.85714285714286) internal successors, (1664), 14 states have internal predecessors, (1664), 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 11:29:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:29:43,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 354 [2023-08-26 11:29:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:29:43,522 INFO L124 PetriNetUnfolderBase]: 593/1012 cut-off events. [2023-08-26 11:29:43,522 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2023-08-26 11:29:43,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3028 conditions, 1012 events. 593/1012 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3519 event pairs, 155 based on Foata normal form. 4/958 useless extension candidates. Maximal degree in co-relation 3018. Up to 883 conditions per place. [2023-08-26 11:29:43,526 INFO L140 encePairwiseOnDemand]: 343/354 looper letters, 54 selfloop transitions, 13 changer transitions 1/73 dead transitions. [2023-08-26 11:29:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 471 flow [2023-08-26 11:29:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 11:29:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 11:29:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1449 transitions. [2023-08-26 11:29:43,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411016949152542 [2023-08-26 11:29:43,531 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1449 transitions. [2023-08-26 11:29:43,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1449 transitions. [2023-08-26 11:29:43,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:29:43,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1449 transitions. [2023-08-26 11:29:43,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.75) internal successors, (1449), 12 states have internal predecessors, (1449), 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 11:29:43,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 354.0) internal successors, (4602), 13 states have internal predecessors, (4602), 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 11:29:43,540 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 354.0) internal successors, (4602), 13 states have internal predecessors, (4602), 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 11:29:43,540 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 311 flow. Second operand 12 states and 1449 transitions. [2023-08-26 11:29:43,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 471 flow [2023-08-26 11:29:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:29:43,543 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 317 flow [2023-08-26 11:29:43,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=317, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-08-26 11:29:43,544 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2023-08-26 11:29:43,544 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 317 flow [2023-08-26 11:29:43,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 118.85714285714286) internal successors, (1664), 14 states have internal predecessors, (1664), 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 11:29:43,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:29:43,545 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, 1, 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 11:29:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 11:29:43,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-08-26 11:29:43,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:29:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1211916565, now seen corresponding path program 1 times [2023-08-26 11:29:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:29:43,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22249702] [2023-08-26 11:29:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:29:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:29:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 11:29:43,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 11:29:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 11:29:43,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 11:29:43,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 11:29:43,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (69 of 70 remaining) [2023-08-26 11:29:43,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 70 remaining) [2023-08-26 11:29:43,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 70 remaining) [2023-08-26 11:29:43,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 70 remaining) [2023-08-26 11:29:43,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 70 remaining) [2023-08-26 11:29:43,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 70 remaining) [2023-08-26 11:29:43,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (47 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (46 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 70 remaining) [2023-08-26 11:29:43,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 70 remaining) [2023-08-26 11:29:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 70 remaining) [2023-08-26 11:29:43,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 70 remaining) [2023-08-26 11:29:43,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 70 remaining) [2023-08-26 11:29:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 70 remaining) [2023-08-26 11:29:43,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 11:29:43,672 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:29:43,679 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 11:29:43,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 11:29:43,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:29:43 BasicIcfg [2023-08-26 11:29:43,768 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 11:29:43,769 INFO L158 Benchmark]: Toolchain (without parser) took 23367.72ms. Allocated memory was 348.1MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 321.4MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-26 11:29:43,769 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 326.1MB in the beginning and 325.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 11:29:43,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.12ms. Allocated memory is still 348.1MB. Free memory was 321.4MB in the beginning and 287.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-26 11:29:43,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.25ms. Allocated memory is still 348.1MB. Free memory was 287.9MB in the beginning and 285.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 11:29:43,770 INFO L158 Benchmark]: Boogie Preprocessor took 46.99ms. Allocated memory is still 348.1MB. Free memory was 285.0MB in the beginning and 283.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 11:29:43,771 INFO L158 Benchmark]: RCFGBuilder took 500.70ms. Allocated memory is still 348.1MB. Free memory was 283.7MB in the beginning and 263.2MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 11:29:43,772 INFO L158 Benchmark]: TraceAbstraction took 22171.78ms. Allocated memory was 348.1MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 262.7MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-26 11:29:43,773 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 326.1MB in the beginning and 325.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 576.12ms. Allocated memory is still 348.1MB. Free memory was 321.4MB in the beginning and 287.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.25ms. Allocated memory is still 348.1MB. Free memory was 287.9MB in the beginning and 285.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.99ms. Allocated memory is still 348.1MB. Free memory was 285.0MB in the beginning and 283.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 500.70ms. Allocated memory is still 348.1MB. Free memory was 283.7MB in the beginning and 263.2MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 22171.78ms. Allocated memory was 348.1MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 262.7MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 283]: Unsoundness Warning unspecified type, defaulting to int C: short [283] - GenericResultAtLocation [Line: 283]: Unsoundness Warning unspecified type, defaulting to int C: short [283] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 166 PlacesBefore, 98 PlacesAfterwards, 152 TransitionsBefore, 84 TransitionsAfterwards, 2920 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 110 TotalNumberOfCompositions, 6693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4398, independent: 4155, independent conditional: 0, independent unconditional: 4155, dependent: 243, dependent conditional: 0, dependent unconditional: 243, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1248, independent: 1184, independent conditional: 0, independent unconditional: 1184, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4398, independent: 2971, independent conditional: 0, independent unconditional: 2971, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 1248, unknown conditional: 0, unknown unconditional: 1248] , Statistics on independence cache: Total cache size (in pairs): 148, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, pthread_create(&t, 0, thread0, 0)=-2147483648, t={6:0}, v={0:0}] [L1163] 0 \read(t) VAL [\read(t)=-2147483648, arg={0:0}, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-2147483647, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1148] 1 \read(t1) VAL [\read(t1)=-2147483647, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=-2147483647, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=-2147483646, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t3, 0, thread3, 0)=-2147483645, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 3 v[0] = 'X' [L1135] 3 return 0; [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=-2147483644, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 5 v[0] = 'X' [L1135] 5 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t5, 0, thread2, 0)=-2147483643, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1153] 1 \read(t2) VAL [\read(t2)=-2147483646, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 6 v[0] = 'X' [L1135] 6 return 0; [L1140] 4 v[0] = 'Y' [L1142] 4 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=-2147483646, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\read(t3)=-2147483645, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=-2147483645, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\read(t4)=-2147483644, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=-2147483644, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] 1 \read(t5) VAL [\read(t5)=-2147483643, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=-2147483643, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\read(t)=-2147483648, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression [L1123] CALL 0 reach_error() [L20] COND FALSE 0 !(0) [L20] 0 __assert_fail ("0", "singleton.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, v={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 279 locations, 70 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: 21.8s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1306 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1306 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2241 IncrementalHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 41 mSDtfsCounter, 2241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=17, InterpolantAutomatonStates: 108, 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, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 6470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-26 11:29:43,794 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...