/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:29:36,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:29:36,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 18:29:36,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:29:36,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:29:36,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:29:36,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:29:36,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:29:36,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:29:36,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:29:36,707 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:29:36,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:29:36,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:29:36,708 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:29:36,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:29:36,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:29:36,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:29:36,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:29:36,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:29:36,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:29:36,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:29:36,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:29:36,711 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:29:36,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:29:36,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:29:36,712 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:29:36,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:29:36,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:29:36,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:29:36,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:29:36,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:29:36,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:29:36,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:29:36,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:29:36,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:29:36,715 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:29:37,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:29:37,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:29:37,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:29:37,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:29:37,060 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:29:37,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-26 18:29:38,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:29:38,506 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:29:38,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-26 18:29:38,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b250d67/c832b4334bd74b84be4ff8c2e7e8431a/FLAGfdc3ae497 [2023-08-26 18:29:38,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b250d67/c832b4334bd74b84be4ff8c2e7e8431a [2023-08-26 18:29:38,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:29:38,551 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:29:38,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:29:38,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:29:38,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:29:38,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:38" (1/1) ... [2023-08-26 18:29:38,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a06b065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:38, skipping insertion in model container [2023-08-26 18:29:38,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:38" (1/1) ... [2023-08-26 18:29:38,612 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:29:38,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:29:38,951 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:29:38,982 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 18:29:38,984 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 18:29:39,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:29:39,043 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 18:29:39,043 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 18:29:39,049 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:29:39,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39 WrapperNode [2023-08-26 18:29:39,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:29:39,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:29:39,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:29:39,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:29:39,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,107 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-08-26 18:29:39,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:29:39,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:29:39,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:29:39,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:29:39,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:29:39,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:29:39,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:29:39,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:29:39,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (1/1) ... [2023-08-26 18:29:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:29:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:29:39,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 18:29:39,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:29:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 18:29:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 18:29:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 18:29:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 18:29:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:29:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 18:29:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:29:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:29:39,219 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 18:29:39,327 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:29:39,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:29:39,455 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:29:39,461 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:29:39,461 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:29:39,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:39 BoogieIcfgContainer [2023-08-26 18:29:39,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:29:39,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:29:39,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:29:39,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:29:39,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:29:38" (1/3) ... [2023-08-26 18:29:39,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450824f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:39, skipping insertion in model container [2023-08-26 18:29:39,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:39" (2/3) ... [2023-08-26 18:29:39,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450824f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:39, skipping insertion in model container [2023-08-26 18:29:39,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:39" (3/3) ... [2023-08-26 18:29:39,470 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-08-26 18:29:39,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:29:39,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 18:29:39,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:29:39,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 18:29:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 160 flow [2023-08-26 18:29:39,593 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-08-26 18:29:39,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:39,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 3/73 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. 0/65 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-26 18:29:39,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 75 transitions, 160 flow [2023-08-26 18:29:39,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2023-08-26 18:29:39,603 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:29:39,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 61 transitions, 128 flow [2023-08-26 18:29:39,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 61 transitions, 128 flow [2023-08-26 18:29:39,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 128 flow [2023-08-26 18:29:39,629 INFO L124 PetriNetUnfolderBase]: 1/61 cut-off events. [2023-08-26 18:29:39,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 61 events. 1/61 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. 0/56 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-26 18:29:39,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 612 [2023-08-26 18:29:41,545 INFO L134 LiptonReduction]: Checked pairs total: 1091 [2023-08-26 18:29:41,545 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-26 18:29:41,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:29:41,563 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;@73f584e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:29:41,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 18:29:41,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:29:41,564 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 18:29:41,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:41,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:41,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:29:41,566 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 18:29:41,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 272, now seen corresponding path program 1 times [2023-08-26 18:29:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369926681] [2023-08-26 18:29:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:41,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:41,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369926681] [2023-08-26 18:29:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369926681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:29:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996859171] [2023-08-26 18:29:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:29:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:29:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:29:41,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 142 [2023-08-26 18:29:41,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 40 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:41,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:41,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 142 [2023-08-26 18:29:41,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:41,745 INFO L124 PetriNetUnfolderBase]: 32/71 cut-off events. [2023-08-26 18:29:41,745 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 18:29:41,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 71 events. 32/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 32 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 139. Up to 67 conditions per place. [2023-08-26 18:29:41,747 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 18:29:41,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 50 flow [2023-08-26 18:29:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:29:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:29:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 153 transitions. [2023-08-26 18:29:41,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387323943661971 [2023-08-26 18:29:41,759 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 153 transitions. [2023-08-26 18:29:41,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 153 transitions. [2023-08-26 18:29:41,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:41,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 153 transitions. [2023-08-26 18:29:41,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:41,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:41,769 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:41,771 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 40 flow. Second operand 2 states and 153 transitions. [2023-08-26 18:29:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 50 flow [2023-08-26 18:29:41,773 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 18:29:41,774 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-26 18:29:41,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, 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 18:29:41,779 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2023-08-26 18:29:41,779 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-26 18:29:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:41,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:41,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 18:29:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:29:41,780 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 18:29:41,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -605590320, now seen corresponding path program 1 times [2023-08-26 18:29:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812593151] [2023-08-26 18:29:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812593151] [2023-08-26 18:29:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812593151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:29:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192382178] [2023-08-26 18:29:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:42,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 142 [2023-08-26 18:29:42,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:42,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 142 [2023-08-26 18:29:42,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:42,120 INFO L124 PetriNetUnfolderBase]: 40/87 cut-off events. [2023-08-26 18:29:42,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:42,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 87 events. 40/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 258 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 176. Up to 74 conditions per place. [2023-08-26 18:29:42,121 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-26 18:29:42,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 76 flow [2023-08-26 18:29:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-08-26 18:29:42,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 18:29:42,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-08-26 18:29:42,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-08-26 18:29:42,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-08-26 18:29:42,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,127 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 213 transitions. [2023-08-26 18:29:42,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 76 flow [2023-08-26 18:29:42,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:29:42,128 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2023-08-26 18:29:42,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, 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 18:29:42,129 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-08-26 18:29:42,129 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2023-08-26 18:29:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:42,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:29:42,130 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 18:29:42,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1593431646, now seen corresponding path program 1 times [2023-08-26 18:29:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:42,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897045147] [2023-08-26 18:29:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:42,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897045147] [2023-08-26 18:29:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897045147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:42,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:42,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 18:29:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239732350] [2023-08-26 18:29:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:42,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 142 [2023-08-26 18:29:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 142 [2023-08-26 18:29:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:42,292 INFO L124 PetriNetUnfolderBase]: 18/49 cut-off events. [2023-08-26 18:29:42,292 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 18:29:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 49 events. 18/49 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 6 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 124. Up to 32 conditions per place. [2023-08-26 18:29:42,293 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-08-26 18:29:42,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 97 flow [2023-08-26 18:29:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-08-26 18:29:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49765258215962443 [2023-08-26 18:29:42,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-08-26 18:29:42,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-08-26 18:29:42,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:42,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-08-26 18:29:42,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,301 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 3 states and 212 transitions. [2023-08-26 18:29:42,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 97 flow [2023-08-26 18:29:42,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:29:42,303 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 63 flow [2023-08-26 18:29:42,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-26 18:29:42,304 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-08-26 18:29:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 63 flow [2023-08-26 18:29:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 18:29:42,308 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 18:29:42,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1672860918, now seen corresponding path program 1 times [2023-08-26 18:29:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623974635] [2023-08-26 18:29:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:42,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623974635] [2023-08-26 18:29:42,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623974635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:42,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:42,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:29:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577273610] [2023-08-26 18:29:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:29:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:29:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:29:42,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 142 [2023-08-26 18:29:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 142 [2023-08-26 18:29:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:42,453 INFO L124 PetriNetUnfolderBase]: 9/31 cut-off events. [2023-08-26 18:29:42,453 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 18:29:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 31 events. 9/31 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 92. Up to 13 conditions per place. [2023-08-26 18:29:42,454 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 12 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-26 18:29:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 109 flow [2023-08-26 18:29:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:29:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:29:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-26 18:29:42,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876760563380282 [2023-08-26 18:29:42,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-26 18:29:42,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-26 18:29:42,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:42,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-26 18:29:42,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,459 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,459 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 63 flow. Second operand 4 states and 277 transitions. [2023-08-26 18:29:42,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 109 flow [2023-08-26 18:29:42,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 104 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 18:29:42,461 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 74 flow [2023-08-26 18:29:42,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-08-26 18:29:42,462 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-26 18:29:42,462 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 74 flow [2023-08-26 18:29:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:42,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 18:29:42,463 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 18:29:42,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -744480895, now seen corresponding path program 1 times [2023-08-26 18:29:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19892495] [2023-08-26 18:29:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:42,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19892495] [2023-08-26 18:29:42,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19892495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:42,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:42,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 18:29:42,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076908396] [2023-08-26 18:29:42,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:42,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:42,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 142 [2023-08-26 18:29:42,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:42,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 142 [2023-08-26 18:29:42,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:42,633 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2023-08-26 18:29:42,637 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-26 18:29:42,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 40 events. 10/40 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 6 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 130. Up to 28 conditions per place. [2023-08-26 18:29:42,638 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 12 selfloop transitions, 2 changer transitions 6/21 dead transitions. [2023-08-26 18:29:42,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 148 flow [2023-08-26 18:29:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-08-26 18:29:42,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953051643192488 [2023-08-26 18:29:42,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-08-26 18:29:42,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-08-26 18:29:42,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:42,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-08-26 18:29:42,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,643 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 74 flow. Second operand 3 states and 211 transitions. [2023-08-26 18:29:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 148 flow [2023-08-26 18:29:42,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 130 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-26 18:29:42,649 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 64 flow [2023-08-26 18:29:42,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-08-26 18:29:42,652 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-26 18:29:42,652 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 64 flow [2023-08-26 18:29:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:42,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 18:29:42,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:42,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1439012583, now seen corresponding path program 2 times [2023-08-26 18:29:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497913403] [2023-08-26 18:29:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:29:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497913403] [2023-08-26 18:29:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497913403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:42,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:42,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:29:42,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222869706] [2023-08-26 18:29:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:29:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:29:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:29:42,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 142 [2023-08-26 18:29:42,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:42,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 142 [2023-08-26 18:29:42,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:42,793 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-26 18:29:42,793 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-26 18:29:42,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 17 events. 3/17 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 1 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 59. Up to 7 conditions per place. [2023-08-26 18:29:42,794 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-26 18:29:42,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 14 transitions, 92 flow [2023-08-26 18:29:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:29:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:29:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-08-26 18:29:42,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47183098591549294 [2023-08-26 18:29:42,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-08-26 18:29:42,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-08-26 18:29:42,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:42,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-08-26 18:29:42,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,801 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 64 flow. Second operand 4 states and 268 transitions. [2023-08-26 18:29:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 14 transitions, 92 flow [2023-08-26 18:29:42,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 80 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-26 18:29:42,803 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-26 18:29:42,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=24, PETRI_TRANSITIONS=0} [2023-08-26 18:29:42,805 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-26 18:29:42,805 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-26 18:29:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:42,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-08-26 18:29:42,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 18:29:42,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 18:29:42,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 18:29:42,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2023-08-26 18:29:42,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 18:29:42,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-26 18:29:42,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 18:29:42,809 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-26 18:29:42,812 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:29:42,812 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:29:42,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:29:42 BasicIcfg [2023-08-26 18:29:42,815 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:29:42,816 INFO L158 Benchmark]: Toolchain (without parser) took 4264.28ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 360.8MB in the beginning and 322.3MB in the end (delta: 38.5MB). Peak memory consumption was 116.7MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,816 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.2MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:29:42,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.29ms. Allocated memory is still 385.9MB. Free memory was 360.3MB in the beginning and 340.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.61ms. Allocated memory is still 385.9MB. Free memory was 340.4MB in the beginning and 338.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,817 INFO L158 Benchmark]: Boogie Preprocessor took 37.01ms. Allocated memory is still 385.9MB. Free memory was 338.8MB in the beginning and 337.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,817 INFO L158 Benchmark]: RCFGBuilder took 317.01ms. Allocated memory is still 385.9MB. Free memory was 337.2MB in the beginning and 323.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,817 INFO L158 Benchmark]: TraceAbstraction took 3350.24ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 323.1MB in the beginning and 322.3MB in the end (delta: 794.4kB). Peak memory consumption was 78.9MB. Max. memory is 16.0GB. [2023-08-26 18:29:42,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.2MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 496.29ms. Allocated memory is still 385.9MB. Free memory was 360.3MB in the beginning and 340.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.61ms. Allocated memory is still 385.9MB. Free memory was 340.4MB in the beginning and 338.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.01ms. Allocated memory is still 385.9MB. Free memory was 338.8MB in the beginning and 337.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 317.01ms. Allocated memory is still 385.9MB. Free memory was 337.2MB in the beginning and 323.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3350.24ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 323.1MB in the beginning and 322.3MB in the end (delta: 794.4kB). Peak memory consumption was 78.9MB. 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: 1.9s, 67 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 67 TotalNumberOfCompositions, 1091 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 674, independent: 620, independent conditional: 0, independent unconditional: 620, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 360, independent: 341, independent conditional: 0, independent unconditional: 341, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 674, independent: 279, independent conditional: 0, independent unconditional: 279, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 360, unknown conditional: 0, unknown unconditional: 360] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, 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, 89 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: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 18:29:42,837 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...