/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/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:33:11,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:33:11,121 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 15:33:11,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:33:11,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:33:11,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:33:11,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:33:11,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:33:11,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:33:11,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:33:11,147 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:33:11,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:33:11,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:33:11,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:33:11,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:33:11,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:33:11,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:33:11,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:33:11,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:33:11,151 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:33:11,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:33:11,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:11,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:33:11,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:33:11,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:33:11,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:33:11,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:33:11,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:33:11,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:33:11,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:33:11,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:33:11,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:33:11,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:33:11,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:33:11,400 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:33:11,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 15:33:12,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:33:12,572 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:33:12,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 15:33:12,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0618226c/cff930cd7d2145a8b5ad2cf039ce772a/FLAG60fc9126f [2023-08-26 15:33:12,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0618226c/cff930cd7d2145a8b5ad2cf039ce772a [2023-08-26 15:33:12,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:33:12,912 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:33:12,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:12,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:33:12,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:33:12,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:12" (1/1) ... [2023-08-26 15:33:12,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b9b105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:12, skipping insertion in model container [2023-08-26 15:33:12,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:12" (1/1) ... [2023-08-26 15:33:12,954 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:33:13,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:13,209 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:33:13,235 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 15:33:13,236 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 15:33:13,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:13,285 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:33:13,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13 WrapperNode [2023-08-26 15:33:13,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:13,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:13,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:33:13,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:33:13,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,336 INFO L138 Inliner]: procedures = 162, calls = 41, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 86 [2023-08-26 15:33:13,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:13,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:33:13,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:33:13,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:33:13,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:33:13,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:33:13,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:33:13,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:33:13,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (1/1) ... [2023-08-26 15:33:13,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:13,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:33:13,434 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 15:33:13,494 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 15:33:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:33:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 15:33:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 15:33:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:33:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:33:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:33:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:33:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:33:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:33:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:33:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:33:13,520 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 15:33:13,599 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:33:13,601 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:33:13,820 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:33:13,827 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:33:13,827 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:33:13,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:13 BoogieIcfgContainer [2023-08-26 15:33:13,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:33:13,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:33:13,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:33:13,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:33:13,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:33:12" (1/3) ... [2023-08-26 15:33:13,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6af1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:13, skipping insertion in model container [2023-08-26 15:33:13,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:13" (2/3) ... [2023-08-26 15:33:13,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6af1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:13, skipping insertion in model container [2023-08-26 15:33:13,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:13" (3/3) ... [2023-08-26 15:33:13,835 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 15:33:13,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:33:13,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 15:33:13,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:33:13,908 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:33:13,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 242 flow [2023-08-26 15:33:14,009 INFO L124 PetriNetUnfolderBase]: 6/116 cut-off events. [2023-08-26 15:33:14,010 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:33:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 6/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-26 15:33:14,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 117 transitions, 242 flow [2023-08-26 15:33:14,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 108 transitions, 219 flow [2023-08-26 15:33:14,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:33:14,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-26 15:33:14,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-26 15:33:14,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 108 transitions, 219 flow [2023-08-26 15:33:14,056 INFO L124 PetriNetUnfolderBase]: 6/108 cut-off events. [2023-08-26 15:33:14,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:14,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 6/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-26 15:33:14,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 1872 [2023-08-26 15:33:16,664 INFO L134 LiptonReduction]: Checked pairs total: 4949 [2023-08-26 15:33:16,665 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-26 15:33:16,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:33:16,677 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;@10d75f99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:33:16,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-26 15:33:16,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:33:16,678 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:33:16,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:16,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:16,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:33:16,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:16,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 420, now seen corresponding path program 1 times [2023-08-26 15:33:16,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:16,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034606855] [2023-08-26 15:33:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:16,750 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 15:33:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034606855] [2023-08-26 15:33:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034606855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:33:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78067685] [2023-08-26 15:33:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:16,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:33:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:33:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:33:16,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 226 [2023-08-26 15:33:16,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 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 15:33:16,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:16,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 226 [2023-08-26 15:33:16,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:16,857 INFO L124 PetriNetUnfolderBase]: 91/228 cut-off events. [2023-08-26 15:33:16,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 228 events. 91/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 837 event pairs, 91 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 428. Up to 205 conditions per place. [2023-08-26 15:33:16,861 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 22 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-26 15:33:16,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 97 flow [2023-08-26 15:33:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:33:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:33:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 237 transitions. [2023-08-26 15:33:16,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243362831858407 [2023-08-26 15:33:16,872 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 237 transitions. [2023-08-26 15:33:16,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 237 transitions. [2023-08-26 15:33:16,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:16,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 237 transitions. [2023-08-26 15:33:16,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:16,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:16,883 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:16,884 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 2 states and 237 transitions. [2023-08-26 15:33:16,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 97 flow [2023-08-26 15:33:16,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:16,887 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 52 flow [2023-08-26 15:33:16,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-26 15:33:16,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-08-26 15:33:16,891 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 52 flow [2023-08-26 15:33:16,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 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 15:33:16,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:16,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:33:16,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:33:16,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:16,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash 397486391, now seen corresponding path program 1 times [2023-08-26 15:33:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:16,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273695038] [2023-08-26 15:33:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,101 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 15:33:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273695038] [2023-08-26 15:33:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273695038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:33:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848126196] [2023-08-26 15:33:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:17,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-26 15:33:17,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-26 15:33:17,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,181 INFO L124 PetriNetUnfolderBase]: 85/217 cut-off events. [2023-08-26 15:33:17,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:17,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 217 events. 85/217 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 800 event pairs, 61 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 411. Up to 139 conditions per place. [2023-08-26 15:33:17,184 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 32 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-26 15:33:17,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 144 flow [2023-08-26 15:33:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-26 15:33:17,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48525073746312686 [2023-08-26 15:33:17,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-26 15:33:17,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-26 15:33:17,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-26 15:33:17,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,194 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 52 flow. Second operand 3 states and 329 transitions. [2023-08-26 15:33:17,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 144 flow [2023-08-26 15:33:17,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:33:17,195 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 60 flow [2023-08-26 15:33:17,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-26 15:33:17,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-26 15:33:17,196 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 60 flow [2023-08-26 15:33:17,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:33:17,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash -267678511, now seen corresponding path program 1 times [2023-08-26 15:33:17,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929890550] [2023-08-26 15:33:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,310 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 15:33:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929890550] [2023-08-26 15:33:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929890550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:33:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841099988] [2023-08-26 15:33:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:33:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:33:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:33:17,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-26 15:33:17,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-26 15:33:17,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,380 INFO L124 PetriNetUnfolderBase]: 86/218 cut-off events. [2023-08-26 15:33:17,380 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 15:33:17,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 218 events. 86/218 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 816 event pairs, 18 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 446. Up to 74 conditions per place. [2023-08-26 15:33:17,383 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 30 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2023-08-26 15:33:17,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 187 flow [2023-08-26 15:33:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:33:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:33:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-08-26 15:33:17,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194690265486726 [2023-08-26 15:33:17,385 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-08-26 15:33:17,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-08-26 15:33:17,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-08-26 15:33:17,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,391 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 60 flow. Second operand 5 states and 474 transitions. [2023-08-26 15:33:17,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 187 flow [2023-08-26 15:33:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:33:17,393 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 124 flow [2023-08-26 15:33:17,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-26 15:33:17,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-26 15:33:17,397 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 124 flow [2023-08-26 15:33:17,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:33:17,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1290144293, now seen corresponding path program 1 times [2023-08-26 15:33:17,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595658573] [2023-08-26 15:33:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,480 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 15:33:17,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595658573] [2023-08-26 15:33:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595658573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:33:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821726712] [2023-08-26 15:33:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:17,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-26 15:33:17,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 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 15:33:17,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-26 15:33:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,540 INFO L124 PetriNetUnfolderBase]: 70/198 cut-off events. [2023-08-26 15:33:17,540 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-26 15:33:17,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 198 events. 70/198 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 726 event pairs, 22 based on Foata normal form. 21/200 useless extension candidates. Maximal degree in co-relation 504. Up to 118 conditions per place. [2023-08-26 15:33:17,542 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 36 selfloop transitions, 14 changer transitions 0/50 dead transitions. [2023-08-26 15:33:17,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 295 flow [2023-08-26 15:33:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-08-26 15:33:17,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45132743362831856 [2023-08-26 15:33:17,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-08-26 15:33:17,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-08-26 15:33:17,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-08-26 15:33:17,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,545 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 124 flow. Second operand 3 states and 306 transitions. [2023-08-26 15:33:17,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 295 flow [2023-08-26 15:33:17,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 281 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:17,549 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 197 flow [2023-08-26 15:33:17,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-08-26 15:33:17,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-08-26 15:33:17,550 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 197 flow [2023-08-26 15:33:17,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 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 15:33:17,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:33:17,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1344528765, now seen corresponding path program 1 times [2023-08-26 15:33:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692143125] [2023-08-26 15:33:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,600 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 15:33:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692143125] [2023-08-26 15:33:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692143125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:33:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837570183] [2023-08-26 15:33:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:17,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-26 15:33:17,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-26 15:33:17,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,641 INFO L124 PetriNetUnfolderBase]: 63/187 cut-off events. [2023-08-26 15:33:17,641 INFO L125 PetriNetUnfolderBase]: For 78/79 co-relation queries the response was YES. [2023-08-26 15:33:17,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 187 events. 63/187 cut-off events. For 78/79 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 711 event pairs, 23 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 593. Up to 118 conditions per place. [2023-08-26 15:33:17,642 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 38 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-26 15:33:17,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 302 flow [2023-08-26 15:33:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-26 15:33:17,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823008849557522 [2023-08-26 15:33:17,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-26 15:33:17,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-26 15:33:17,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-26 15:33:17,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 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 15:33:17,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,645 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 197 flow. Second operand 3 states and 327 transitions. [2023-08-26 15:33:17,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 302 flow [2023-08-26 15:33:17,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:17,647 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 183 flow [2023-08-26 15:33:17,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-26 15:33:17,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-26 15:33:17,648 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 183 flow [2023-08-26 15:33:17,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:33:17,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,649 INFO L85 PathProgramCache]: Analyzing trace with hash -303796126, now seen corresponding path program 1 times [2023-08-26 15:33:17,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886447619] [2023-08-26 15:33:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,710 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 15:33:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886447619] [2023-08-26 15:33:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886447619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:33:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524187816] [2023-08-26 15:33:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:33:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:33:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:33:17,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-26 15:33:17,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-26 15:33:17,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,776 INFO L124 PetriNetUnfolderBase]: 63/183 cut-off events. [2023-08-26 15:33:17,776 INFO L125 PetriNetUnfolderBase]: For 75/76 co-relation queries the response was YES. [2023-08-26 15:33:17,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 183 events. 63/183 cut-off events. For 75/76 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 664 event pairs, 10 based on Foata normal form. 5/170 useless extension candidates. Maximal degree in co-relation 547. Up to 83 conditions per place. [2023-08-26 15:33:17,777 INFO L140 encePairwiseOnDemand]: 218/226 looper letters, 38 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-08-26 15:33:17,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 324 flow [2023-08-26 15:33:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 15:33:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 15:33:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 555 transitions. [2023-08-26 15:33:17,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092920353982301 [2023-08-26 15:33:17,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 555 transitions. [2023-08-26 15:33:17,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 555 transitions. [2023-08-26 15:33:17,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 555 transitions. [2023-08-26 15:33:17,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,781 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,781 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 183 flow. Second operand 6 states and 555 transitions. [2023-08-26 15:33:17,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 324 flow [2023-08-26 15:33:17,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:33:17,783 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 194 flow [2023-08-26 15:33:17,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-26 15:33:17,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2023-08-26 15:33:17,784 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 194 flow [2023-08-26 15:33:17,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:33:17,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash -851024899, now seen corresponding path program 1 times [2023-08-26 15:33:17,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412509535] [2023-08-26 15:33:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:17,850 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 15:33:17,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412509535] [2023-08-26 15:33:17,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412509535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:17,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:17,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:33:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971720672] [2023-08-26 15:33:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:33:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:33:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:33:17,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-26 15:33:17,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:17,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-26 15:33:17,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:17,918 INFO L124 PetriNetUnfolderBase]: 61/178 cut-off events. [2023-08-26 15:33:17,918 INFO L125 PetriNetUnfolderBase]: For 89/90 co-relation queries the response was YES. [2023-08-26 15:33:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 178 events. 61/178 cut-off events. For 89/90 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 660 event pairs, 18 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 543. Up to 82 conditions per place. [2023-08-26 15:33:17,919 INFO L140 encePairwiseOnDemand]: 221/226 looper letters, 48 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-26 15:33:17,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 384 flow [2023-08-26 15:33:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:33:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:33:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2023-08-26 15:33:17,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47168141592920354 [2023-08-26 15:33:17,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2023-08-26 15:33:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2023-08-26 15:33:17,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:17,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2023-08-26 15:33:17,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,925 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 194 flow. Second operand 5 states and 533 transitions. [2023-08-26 15:33:17,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 384 flow [2023-08-26 15:33:17,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 360 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-26 15:33:17,928 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 188 flow [2023-08-26 15:33:17,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-26 15:33:17,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-08-26 15:33:17,928 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 188 flow [2023-08-26 15:33:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:17,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:17,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:17,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:33:17,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:17,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash -9060986, now seen corresponding path program 1 times [2023-08-26 15:33:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171049615] [2023-08-26 15:33:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:18,005 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 15:33:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171049615] [2023-08-26 15:33:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171049615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:33:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782116666] [2023-08-26 15:33:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:18,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:18,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-26 15:33:18,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 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 15:33:18,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:18,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-26 15:33:18,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:18,050 INFO L124 PetriNetUnfolderBase]: 49/152 cut-off events. [2023-08-26 15:33:18,050 INFO L125 PetriNetUnfolderBase]: For 95/96 co-relation queries the response was YES. [2023-08-26 15:33:18,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 152 events. 49/152 cut-off events. For 95/96 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 506 event pairs, 34 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 457. Up to 132 conditions per place. [2023-08-26 15:33:18,051 INFO L140 encePairwiseOnDemand]: 224/226 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-26 15:33:18,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 242 flow [2023-08-26 15:33:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-26 15:33:18,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277286135693215 [2023-08-26 15:33:18,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-26 15:33:18,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-26 15:33:18,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:18,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-26 15:33:18,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,054 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 188 flow. Second operand 3 states and 290 transitions. [2023-08-26 15:33:18,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 242 flow [2023-08-26 15:33:18,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:33:18,057 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 174 flow [2023-08-26 15:33:18,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-08-26 15:33:18,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-08-26 15:33:18,059 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 174 flow [2023-08-26 15:33:18,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 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 15:33:18,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:18,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:33:18,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:18,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash -9060985, now seen corresponding path program 1 times [2023-08-26 15:33:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136241522] [2023-08-26 15:33:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:18,125 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 15:33:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:18,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136241522] [2023-08-26 15:33:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136241522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:18,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:18,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:33:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882599132] [2023-08-26 15:33:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:18,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:18,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 226 [2023-08-26 15:33:18,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:18,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 226 [2023-08-26 15:33:18,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:18,153 INFO L124 PetriNetUnfolderBase]: 37/127 cut-off events. [2023-08-26 15:33:18,153 INFO L125 PetriNetUnfolderBase]: For 69/70 co-relation queries the response was YES. [2023-08-26 15:33:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 127 events. 37/127 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 409 event pairs, 29 based on Foata normal form. 11/137 useless extension candidates. Maximal degree in co-relation 374. Up to 109 conditions per place. [2023-08-26 15:33:18,153 INFO L140 encePairwiseOnDemand]: 224/226 looper letters, 22 selfloop transitions, 1 changer transitions 9/34 dead transitions. [2023-08-26 15:33:18,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 224 flow [2023-08-26 15:33:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-26 15:33:18,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306784660766962 [2023-08-26 15:33:18,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-26 15:33:18,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-26 15:33:18,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:18,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-26 15:33:18,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,157 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 174 flow. Second operand 3 states and 292 transitions. [2023-08-26 15:33:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 224 flow [2023-08-26 15:33:18,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:18,158 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 119 flow [2023-08-26 15:33:18,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-26 15:33:18,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-08-26 15:33:18,159 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 119 flow [2023-08-26 15:33:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:18,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:33:18,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:18,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -893515700, now seen corresponding path program 1 times [2023-08-26 15:33:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828634273] [2023-08-26 15:33:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:18,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:18,322 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 15:33:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828634273] [2023-08-26 15:33:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828634273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 15:33:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373366218] [2023-08-26 15:33:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 15:33:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 15:33:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 15:33:18,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 226 [2023-08-26 15:33:18,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:18,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 226 [2023-08-26 15:33:18,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:18,355 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2023-08-26 15:33:18,355 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-26 15:33:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 69 events. 18/69 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 1 based on Foata normal form. 9/78 useless extension candidates. Maximal degree in co-relation 207. Up to 48 conditions per place. [2023-08-26 15:33:18,356 INFO L140 encePairwiseOnDemand]: 222/226 looper letters, 27 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-26 15:33:18,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 209 flow [2023-08-26 15:33:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:33:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:33:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-08-26 15:33:18,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35508849557522126 [2023-08-26 15:33:18,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-08-26 15:33:18,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-08-26 15:33:18,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:18,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-08-26 15:33:18,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,359 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 119 flow. Second operand 4 states and 321 transitions. [2023-08-26 15:33:18,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 209 flow [2023-08-26 15:33:18,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:33:18,361 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 118 flow [2023-08-26 15:33:18,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2023-08-26 15:33:18,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-26 15:33:18,362 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 118 flow [2023-08-26 15:33:18,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:18,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:33:18,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 5 more)] === [2023-08-26 15:33:18,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -556581084, now seen corresponding path program 1 times [2023-08-26 15:33:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:18,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928230258] [2023-08-26 15:33:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:18,464 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 15:33:18,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:18,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928230258] [2023-08-26 15:33:18,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928230258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:18,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:18,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:33:18,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284034506] [2023-08-26 15:33:18,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:18,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:33:18,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:33:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:33:18,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-26 15:33:18,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 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 15:33:18,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:18,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-26 15:33:18,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:18,494 INFO L124 PetriNetUnfolderBase]: 17/67 cut-off events. [2023-08-26 15:33:18,494 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 15:33:18,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 67 events. 17/67 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 11 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 210. Up to 46 conditions per place. [2023-08-26 15:33:18,494 INFO L140 encePairwiseOnDemand]: 222/226 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-26 15:33:18,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 183 flow [2023-08-26 15:33:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:33:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:33:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2023-08-26 15:33:18,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45685840707964603 [2023-08-26 15:33:18,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 413 transitions. [2023-08-26 15:33:18,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 413 transitions. [2023-08-26 15:33:18,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:18,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 413 transitions. [2023-08-26 15:33:18,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,498 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:18,499 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 118 flow. Second operand 4 states and 413 transitions. [2023-08-26 15:33:18,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 183 flow [2023-08-26 15:33:18,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:33:18,499 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-26 15:33:18,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-26 15:33:18,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-26 15:33:18,500 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-26 15:33:18,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 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 15:33:18,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (5 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (4 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (3 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2023-08-26 15:33:18,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-26 15:33:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:33:18,504 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:18,506 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:33:18,506 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:33:18,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:33:18 BasicIcfg [2023-08-26 15:33:18,509 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:33:18,509 INFO L158 Benchmark]: Toolchain (without parser) took 5597.39ms. Allocated memory was 308.3MB in the beginning and 373.3MB in the end (delta: 65.0MB). Free memory was 282.6MB in the beginning and 217.3MB in the end (delta: 65.2MB). Peak memory consumption was 130.4MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,509 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 308.3MB. Free memory is still 285.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:33:18,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.68ms. Allocated memory is still 308.3MB. Free memory was 282.6MB in the beginning and 263.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.50ms. Allocated memory is still 308.3MB. Free memory was 263.2MB in the beginning and 261.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,510 INFO L158 Benchmark]: Boogie Preprocessor took 27.46ms. Allocated memory is still 308.3MB. Free memory was 261.1MB in the beginning and 259.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,510 INFO L158 Benchmark]: RCFGBuilder took 464.16ms. Allocated memory is still 308.3MB. Free memory was 259.5MB in the beginning and 244.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,510 INFO L158 Benchmark]: TraceAbstraction took 4678.22ms. Allocated memory was 308.3MB in the beginning and 373.3MB in the end (delta: 65.0MB). Free memory was 243.1MB in the beginning and 217.3MB in the end (delta: 25.8MB). Peak memory consumption was 90.5MB. Max. memory is 16.0GB. [2023-08-26 15:33:18,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 308.3MB. Free memory is still 285.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 374.68ms. Allocated memory is still 308.3MB. Free memory was 282.6MB in the beginning and 263.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.50ms. Allocated memory is still 308.3MB. Free memory was 263.2MB in the beginning and 261.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.46ms. Allocated memory is still 308.3MB. Free memory was 261.1MB in the beginning and 259.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 464.16ms. Allocated memory is still 308.3MB. Free memory was 259.5MB in the beginning and 244.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4678.22ms. Allocated memory was 308.3MB in the beginning and 373.3MB in the end (delta: 65.0MB). Free memory was 243.1MB in the beginning and 217.3MB in the end (delta: 25.8MB). Peak memory consumption was 90.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 106 PlacesBefore, 31 PlacesAfterwards, 108 TransitionsBefore, 28 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 109 TotalNumberOfCompositions, 4949 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1907, independent: 1638, independent conditional: 0, independent unconditional: 1638, dependent: 269, dependent conditional: 0, dependent unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1003, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1907, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 1003, unknown conditional: 0, unknown unconditional: 1003] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 132 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 2 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 0.8s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:33:18,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...