/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe036.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:25:26,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:25:26,154 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 15:25:26,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:25:26,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:25:26,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:25:26,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:25:26,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:25:26,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:25:26,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:25:26,174 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:25:26,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:25:26,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:25:26,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:25:26,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:25:26,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:25:26,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:25:26,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:25:26,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:25:26,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:25:26,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:25:26,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:25:26,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:25:26,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:25:26,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:25:26,177 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:25:26,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:25:26,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:25:26,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:25:26,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:25:26,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:25:26,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:25:26,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:25:26,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:25:26,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:25:26,178 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:25:26,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:25:26,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:25:26,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:25:26,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:25:26,428 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:25:26,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-26 15:25:27,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:25:27,640 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:25:27,640 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-26 15:25:27,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8f56431/0f0ccbc0bd534c0bbadf83894b548eba/FLAGac0a79fec [2023-08-26 15:25:27,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8f56431/0f0ccbc0bd534c0bbadf83894b548eba [2023-08-26 15:25:27,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:25:27,983 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:25:27,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:25:27,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:25:27,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:25:27,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:25:27" (1/1) ... [2023-08-26 15:25:27,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb20183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:27, skipping insertion in model container [2023-08-26 15:25:27,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:25:27" (1/1) ... [2023-08-26 15:25:28,018 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:25:28,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:25:28,283 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:25:28,306 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:25:28,308 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:25:28,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:25:28,349 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:25:28,349 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:25:28,354 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:25:28,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28 WrapperNode [2023-08-26 15:25:28,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:25:28,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:25:28,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:25:28,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:25:28,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,399 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-08-26 15:25:28,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:25:28,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:25:28,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:25:28,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:25:28,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,427 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:25:28,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:25:28,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:25:28,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:25:28,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (1/1) ... [2023-08-26 15:25:28,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:25:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:25:28,459 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 15:25:28,476 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 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:25:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 15:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 15:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 15:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 15:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 15:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:25:28,488 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 15:25:28,585 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:25:28,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:25:28,688 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:25:28,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:25:28,693 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:25:28,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:25:28 BoogieIcfgContainer [2023-08-26 15:25:28,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:25:28,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:25:28,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:25:28,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:25:28,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:25:27" (1/3) ... [2023-08-26 15:25:28,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5259b9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:25:28, skipping insertion in model container [2023-08-26 15:25:28,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:25:28" (2/3) ... [2023-08-26 15:25:28,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5259b9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:25:28, skipping insertion in model container [2023-08-26 15:25:28,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:25:28" (3/3) ... [2023-08-26 15:25:28,699 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2023-08-26 15:25:28,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:25:28,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 15:25:28,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:25:28,741 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:25:28,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 162 flow [2023-08-26 15:25:28,786 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2023-08-26 15:25:28,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:25:28,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-26 15:25:28,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 162 flow [2023-08-26 15:25:28,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 62 transitions, 130 flow [2023-08-26 15:25:28,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:25:28,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 62 transitions, 130 flow [2023-08-26 15:25:28,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 62 transitions, 130 flow [2023-08-26 15:25:28,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 62 transitions, 130 flow [2023-08-26 15:25:28,811 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2023-08-26 15:25:28,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:25:28,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-26 15:25:28,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 612 [2023-08-26 15:25:30,461 INFO L134 LiptonReduction]: Checked pairs total: 1222 [2023-08-26 15:25:30,461 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-26 15:25:30,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:25:30,475 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;@50554650, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:25:30,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 15:25:30,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:25:30,476 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:25:30,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:25:30,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:25:30,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:25:30,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 15:25:30,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:25:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 269, now seen corresponding path program 1 times [2023-08-26 15:25:30,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:25:30,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479289401] [2023-08-26 15:25:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:25:30,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:25:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:25:30,554 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 15:25:30,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:25:30,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479289401] [2023-08-26 15:25:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479289401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:25:30,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:25:30,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:25:30,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656122352] [2023-08-26 15:25:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:25:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:25:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:25:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:25:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:25:30,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 136 [2023-08-26 15:25:30,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 40 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:25:30,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 136 [2023-08-26 15:25:30,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:25:30,619 INFO L124 PetriNetUnfolderBase]: 32/70 cut-off events. [2023-08-26 15:25:30,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:25:30,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 70 events. 32/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 32 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 138. Up to 67 conditions per place. [2023-08-26 15:25:30,622 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 15:25:30,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 50 flow [2023-08-26 15:25:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:25:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:25:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2023-08-26 15:25:30,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698529411764706 [2023-08-26 15:25:30,632 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 155 transitions. [2023-08-26 15:25:30,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 155 transitions. [2023-08-26 15:25:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:25:30,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 155 transitions. [2023-08-26 15:25:30,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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 15:25:30,643 INFO L81 ComplementDD]: Finished complementDD. Result 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 15:25:30,644 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 40 flow. Second operand 2 states and 155 transitions. [2023-08-26 15:25:30,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 50 flow [2023-08-26 15:25:30,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:25:30,647 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-26 15:25:30,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-26 15:25:30,651 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2023-08-26 15:25:30,652 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-26 15:25:30,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:25:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 15:25:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:25:30,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 15:25:30,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:25:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash -689569418, now seen corresponding path program 1 times [2023-08-26 15:25:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:25:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483463436] [2023-08-26 15:25:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:25:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:25:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:25:30,882 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 15:25:30,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:25:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483463436] [2023-08-26 15:25:30,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483463436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:25:30,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:25:30,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:25:30,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158167819] [2023-08-26 15:25:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:25:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:25:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:25:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:25:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:25:30,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 136 [2023-08-26 15:25:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:25:30,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 136 [2023-08-26 15:25:30,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:25:30,912 INFO L124 PetriNetUnfolderBase]: 16/45 cut-off events. [2023-08-26 15:25:30,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:25:30,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 45 events. 16/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 5 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 95. Up to 31 conditions per place. [2023-08-26 15:25:30,913 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 13 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-26 15:25:30,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 74 flow [2023-08-26 15:25:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:25:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:25:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-26 15:25:30,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269607843137255 [2023-08-26 15:25:30,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-26 15:25:30,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-26 15:25:30,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:25:30,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-26 15:25:30,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,919 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 215 transitions. [2023-08-26 15:25:30,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 74 flow [2023-08-26 15:25:30,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:25:30,920 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2023-08-26 15:25:30,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-08-26 15:25:30,920 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-08-26 15:25:30,921 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2023-08-26 15:25:30,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:30,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:25:30,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:25:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:25:30,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 15:25:30,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:25:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1313167174, now seen corresponding path program 1 times [2023-08-26 15:25:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:25:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356939918] [2023-08-26 15:25:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:25:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:25:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:25:31,062 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 15:25:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:25:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356939918] [2023-08-26 15:25:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356939918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:25:31,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:25:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:25:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587174414] [2023-08-26 15:25:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:25:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:25:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:25:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:25:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:25:31,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 136 [2023-08-26 15:25:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:25:31,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 136 [2023-08-26 15:25:31,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:25:31,098 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-26 15:25:31,098 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:25:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 29 events. 8/29 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 3 based on Foata normal form. 4/32 useless extension candidates. Maximal degree in co-relation 79. Up to 12 conditions per place. [2023-08-26 15:25:31,099 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 11 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-08-26 15:25:31,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 89 flow [2023-08-26 15:25:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:25:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:25:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2023-08-26 15:25:31,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165441176470589 [2023-08-26 15:25:31,102 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 281 transitions. [2023-08-26 15:25:31,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 281 transitions. [2023-08-26 15:25:31,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:25:31,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 281 transitions. [2023-08-26 15:25:31,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,106 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 4 states and 281 transitions. [2023-08-26 15:25:31,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 89 flow [2023-08-26 15:25:31,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:25:31,107 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 60 flow [2023-08-26 15:25:31,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-26 15:25:31,109 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-26 15:25:31,109 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 60 flow [2023-08-26 15:25:31,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:25:31,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:25:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:25:31,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 15:25:31,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:25:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1120964817, now seen corresponding path program 1 times [2023-08-26 15:25:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:25:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996072699] [2023-08-26 15:25:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:25:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:25:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:25:31,226 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 15:25:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:25:31,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996072699] [2023-08-26 15:25:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996072699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:25:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:25:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:25:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123533379] [2023-08-26 15:25:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:25:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:25:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:25:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:25:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:25:31,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 136 [2023-08-26 15:25:31,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:25:31,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 136 [2023-08-26 15:25:31,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:25:31,264 INFO L124 PetriNetUnfolderBase]: 16/50 cut-off events. [2023-08-26 15:25:31,264 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-26 15:25:31,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 50 events. 16/50 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 150. Up to 32 conditions per place. [2023-08-26 15:25:31,265 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 14 selfloop transitions, 1 changer transitions 10/25 dead transitions. [2023-08-26 15:25:31,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 163 flow [2023-08-26 15:25:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:25:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:25:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2023-08-26 15:25:31,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036764705882353 [2023-08-26 15:25:31,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 274 transitions. [2023-08-26 15:25:31,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 274 transitions. [2023-08-26 15:25:31,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:25:31,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 274 transitions. [2023-08-26 15:25:31,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,268 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 60 flow. Second operand 4 states and 274 transitions. [2023-08-26 15:25:31,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 163 flow [2023-08-26 15:25:31,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 144 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-26 15:25:31,270 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 57 flow [2023-08-26 15:25:31,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-08-26 15:25:31,270 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-26 15:25:31,270 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 57 flow [2023-08-26 15:25:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:25:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:25:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:25:31,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 15:25:31,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:25:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1776454729, now seen corresponding path program 2 times [2023-08-26 15:25:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:25:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831603718] [2023-08-26 15:25:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:25:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:25:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:25:31,329 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 15:25:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:25:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831603718] [2023-08-26 15:25:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831603718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:25:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:25:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:25:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531249624] [2023-08-26 15:25:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:25:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:25:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:25:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:25:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:25:31,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 136 [2023-08-26 15:25:31,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:25:31,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 136 [2023-08-26 15:25:31,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:25:31,360 INFO L124 PetriNetUnfolderBase]: 11/39 cut-off events. [2023-08-26 15:25:31,360 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 15:25:31,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 39 events. 11/39 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 7 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 118. Up to 20 conditions per place. [2023-08-26 15:25:31,361 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-26 15:25:31,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 114 flow [2023-08-26 15:25:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:25:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:25:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-08-26 15:25:31,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944852941176471 [2023-08-26 15:25:31,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-08-26 15:25:31,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-08-26 15:25:31,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:25:31,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-08-26 15:25:31,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,366 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 57 flow. Second operand 4 states and 269 transitions. [2023-08-26 15:25:31,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 114 flow [2023-08-26 15:25:31,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:25:31,366 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-26 15:25:31,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-26 15:25:31,367 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-26 15:25:31,367 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-26 15:25:31,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:25:31,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-08-26 15:25:31,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 15:25:31,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 15:25:31,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 15:25:31,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2023-08-26 15:25:31,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 15:25:31,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-26 15:25:31,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:25:31,370 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-26 15:25:31,372 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:25:31,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:25:31,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:25:31 BasicIcfg [2023-08-26 15:25:31,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:25:31,375 INFO L158 Benchmark]: Toolchain (without parser) took 3391.11ms. Allocated memory was 425.7MB in the beginning and 566.2MB in the end (delta: 140.5MB). Free memory was 400.0MB in the beginning and 308.6MB in the end (delta: 91.4MB). Peak memory consumption was 232.5MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,375 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 425.7MB. Free memory was 402.8MB in the beginning and 402.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:25:31,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.84ms. Allocated memory is still 425.7MB. Free memory was 400.0MB in the beginning and 379.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.22ms. Allocated memory is still 425.7MB. Free memory was 379.9MB in the beginning and 377.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,375 INFO L158 Benchmark]: Boogie Preprocessor took 30.21ms. Allocated memory is still 425.7MB. Free memory was 377.8MB in the beginning and 376.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,376 INFO L158 Benchmark]: RCFGBuilder took 263.38ms. Allocated memory is still 425.7MB. Free memory was 376.3MB in the beginning and 362.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,376 INFO L158 Benchmark]: TraceAbstraction took 2678.32ms. Allocated memory was 425.7MB in the beginning and 566.2MB in the end (delta: 140.5MB). Free memory was 361.7MB in the beginning and 308.6MB in the end (delta: 53.1MB). Peak memory consumption was 194.8MB. Max. memory is 16.0GB. [2023-08-26 15:25:31,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 425.7MB. Free memory was 402.8MB in the beginning and 402.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 371.84ms. Allocated memory is still 425.7MB. Free memory was 400.0MB in the beginning and 379.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.22ms. Allocated memory is still 425.7MB. Free memory was 379.9MB in the beginning and 377.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.21ms. Allocated memory is still 425.7MB. Free memory was 377.8MB in the beginning and 376.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 263.38ms. Allocated memory is still 425.7MB. Free memory was 376.3MB in the beginning and 362.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2678.32ms. Allocated memory was 425.7MB in the beginning and 566.2MB in the end (delta: 140.5MB). Free memory was 361.7MB in the beginning and 308.6MB in the end (delta: 53.1MB). Peak memory consumption was 194.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 68 PlacesBefore, 23 PlacesAfterwards, 62 TransitionsBefore, 17 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 1222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 788, independent: 720, independent conditional: 0, independent unconditional: 720, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 346, independent: 330, independent conditional: 0, independent unconditional: 330, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 788, independent: 390, independent conditional: 0, independent unconditional: 390, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 346, unknown conditional: 0, unknown unconditional: 346] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 7 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:25:31,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...