/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.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:57:28,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:57:28,582 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 [2023-08-27 03:57:28,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:57:28,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:57:28,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:57:28,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:57:28,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:57:28,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:57:28,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:57:28,628 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:57:28,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:57:28,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:57:28,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:57:28,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:57:28,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:57:28,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:57:28,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:57:28,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:57:28,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:57:28,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:57:28,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:57:28,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:57:28,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:57:28,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:57:28,633 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:57:28,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:57:28,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:57:28,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:57:28,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:57:28,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:57:28,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:57:28,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:57:28,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:57:28,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:57:28,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:57:28,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:57:28,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:57:28,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:57:28,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:57:28,973 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:57:28,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:57:30,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:57:30,391 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:57:30,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:57:30,413 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ed100f2/d31e55415ec247f3bfe77ebe567210bc/FLAGe9e447407 [2023-08-27 03:57:30,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ed100f2/d31e55415ec247f3bfe77ebe567210bc [2023-08-27 03:57:30,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:57:30,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:57:30,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:57:30,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:57:30,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:57:30,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:30,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30, skipping insertion in model container [2023-08-27 03:57:30,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:30,505 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:57:30,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:57:30,856 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:57:30,884 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:57:30,885 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:57:30,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:57:30,942 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:57:30,942 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:57:30,948 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:57:30,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30 WrapperNode [2023-08-27 03:57:30,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:57:30,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:57:30,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:57:30,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:57:30,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:30,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,000 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 03:57:31,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:57:31,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:57:31,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:57:31,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:57:31,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:57:31,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:57:31,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:57:31,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:57:31,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (1/1) ... [2023-08-27 03:57:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:57:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:57:31,077 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) [2023-08-27 03:57:31,086 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 [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:57:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:57:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:57:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:57:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:57:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:57:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:57:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:57:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:57:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:57:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:57:31,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:57:31,225 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:57:31,227 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:57:31,389 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:57:31,427 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:57:31,427 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:57:31,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:31 BoogieIcfgContainer [2023-08-27 03:57:31,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:57:31,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:57:31,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:57:31,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:57:31,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:57:30" (1/3) ... [2023-08-27 03:57:31,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d933c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:57:31, skipping insertion in model container [2023-08-27 03:57:31,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:30" (2/3) ... [2023-08-27 03:57:31,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d933c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:57:31, skipping insertion in model container [2023-08-27 03:57:31,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:31" (3/3) ... [2023-08-27 03:57:31,436 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:57:31,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:57:31,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:57:31,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:57:31,510 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:57:31,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:57:31,590 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:57:31,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:57:31,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:57:31,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:57:31,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-27 03:57:31,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:57:31,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:57:31,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:57:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-27 03:57:31,630 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:57:31,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:57:31,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:57:31,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 03:57:33,747 INFO L134 LiptonReduction]: Checked pairs total: 5938 [2023-08-27 03:57:33,747 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 03:57:33,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:57:33,765 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;@54d0baaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:57:33,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:57:33,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:57:33,768 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 03:57:33,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:57:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:33,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:57:33,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:33,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 335334441, now seen corresponding path program 1 times [2023-08-27 03:57:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:33,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109668685] [2023-08-27 03:57:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109668685] [2023-08-27 03:57:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109668685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:57:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918705796] [2023-08-27 03:57:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:33,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:57:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:57:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:57:33,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-27 03:57:33,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:33,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:33,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-27 03:57:33,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:34,154 INFO L124 PetriNetUnfolderBase]: 532/887 cut-off events. [2023-08-27 03:57:34,155 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 03:57:34,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 887 events. 532/887 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4709 event pairs, 306 based on Foata normal form. 8/553 useless extension candidates. Maximal degree in co-relation 1793. Up to 843 conditions per place. [2023-08-27 03:57:34,162 INFO L140 encePairwiseOnDemand]: 164/176 looper letters, 28 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-27 03:57:34,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 149 flow [2023-08-27 03:57:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:57:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:57:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-27 03:57:34,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-08-27 03:57:34,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-27 03:57:34,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-27 03:57:34,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:34,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-27 03:57:34,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,185 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 272 transitions. [2023-08-27 03:57:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 149 flow [2023-08-27 03:57:34,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:57:34,188 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 94 flow [2023-08-27 03:57:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-27 03:57:34,192 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-27 03:57:34,192 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 94 flow [2023-08-27 03:57:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:34,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:57:34,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:34,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 632723755, now seen corresponding path program 1 times [2023-08-27 03:57:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:34,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344200580] [2023-08-27 03:57:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:34,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344200580] [2023-08-27 03:57:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344200580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:34,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:57:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728477930] [2023-08-27 03:57:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:34,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:57:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:57:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:57:34,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-27 03:57:34,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:34,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-27 03:57:34,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:34,402 INFO L124 PetriNetUnfolderBase]: 327/558 cut-off events. [2023-08-27 03:57:34,403 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 03:57:34,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 558 events. 327/558 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2576 event pairs, 150 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 1430. Up to 513 conditions per place. [2023-08-27 03:57:34,409 INFO L140 encePairwiseOnDemand]: 169/176 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 03:57:34,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 158 flow [2023-08-27 03:57:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:57:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:57:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-27 03:57:34,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2023-08-27 03:57:34,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-27 03:57:34,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-27 03:57:34,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:34,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-27 03:57:34,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,421 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 94 flow. Second operand 4 states and 340 transitions. [2023-08-27 03:57:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 158 flow [2023-08-27 03:57:34,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:57:34,422 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 86 flow [2023-08-27 03:57:34,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-27 03:57:34,424 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-27 03:57:34,425 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 86 flow [2023-08-27 03:57:34,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:34,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:34,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:57:34,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:34,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 632561006, now seen corresponding path program 1 times [2023-08-27 03:57:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:34,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661229386] [2023-08-27 03:57:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661229386] [2023-08-27 03:57:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661229386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:57:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950738075] [2023-08-27 03:57:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:57:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:57:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:57:34,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-27 03:57:34,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:34,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-27 03:57:34,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:34,548 INFO L124 PetriNetUnfolderBase]: 92/196 cut-off events. [2023-08-27 03:57:34,548 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-27 03:57:34,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 196 events. 92/196 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 687 event pairs, 31 based on Foata normal form. 12/180 useless extension candidates. Maximal degree in co-relation 503. Up to 104 conditions per place. [2023-08-27 03:57:34,550 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-27 03:57:34,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-08-27 03:57:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:57:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:57:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-27 03:57:34,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49573863636363635 [2023-08-27 03:57:34,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-27 03:57:34,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-27 03:57:34,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:34,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-27 03:57:34,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,554 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 86 flow. Second operand 4 states and 349 transitions. [2023-08-27 03:57:34,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-08-27 03:57:34,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:57:34,556 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 127 flow [2023-08-27 03:57:34,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-27 03:57:34,557 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 03:57:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 127 flow [2023-08-27 03:57:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:34,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:57:34,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:34,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1309472272, now seen corresponding path program 1 times [2023-08-27 03:57:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212278369] [2023-08-27 03:57:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212278369] [2023-08-27 03:57:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212278369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:34,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:34,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:57:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393112769] [2023-08-27 03:57:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:57:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:57:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:57:34,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-27 03:57:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-27 03:57:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:34,713 INFO L124 PetriNetUnfolderBase]: 56/121 cut-off events. [2023-08-27 03:57:34,713 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-27 03:57:34,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 121 events. 56/121 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 357 event pairs, 15 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 375. Up to 48 conditions per place. [2023-08-27 03:57:34,715 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 23 selfloop transitions, 10 changer transitions 1/37 dead transitions. [2023-08-27 03:57:34,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 207 flow [2023-08-27 03:57:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-27 03:57:34,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48068181818181815 [2023-08-27 03:57:34,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-27 03:57:34,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-27 03:57:34,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:34,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-27 03:57:34,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,721 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 127 flow. Second operand 5 states and 423 transitions. [2023-08-27 03:57:34,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 207 flow [2023-08-27 03:57:34,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 193 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 03:57:34,724 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 121 flow [2023-08-27 03:57:34,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-27 03:57:34,725 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 03:57:34,725 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 121 flow [2023-08-27 03:57:34,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:34,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:57:34,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:34,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1587709000, now seen corresponding path program 1 times [2023-08-27 03:57:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657259309] [2023-08-27 03:57:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657259309] [2023-08-27 03:57:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657259309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:57:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438564851] [2023-08-27 03:57:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:57:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:57:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:57:34,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2023-08-27 03:57:34,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:34,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:34,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2023-08-27 03:57:34,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:35,064 INFO L124 PetriNetUnfolderBase]: 133/263 cut-off events. [2023-08-27 03:57:35,065 INFO L125 PetriNetUnfolderBase]: For 362/368 co-relation queries the response was YES. [2023-08-27 03:57:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 263 events. 133/263 cut-off events. For 362/368 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1004 event pairs, 66 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 828. Up to 153 conditions per place. [2023-08-27 03:57:35,066 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 29 selfloop transitions, 2 changer transitions 21/53 dead transitions. [2023-08-27 03:57:35,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 396 flow [2023-08-27 03:57:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:57:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:57:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-08-27 03:57:35,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384469696969697 [2023-08-27 03:57:35,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-08-27 03:57:35,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-08-27 03:57:35,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:35,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-08-27 03:57:35,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,072 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 121 flow. Second operand 6 states and 463 transitions. [2023-08-27 03:57:35,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 396 flow [2023-08-27 03:57:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 334 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-27 03:57:35,075 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 107 flow [2023-08-27 03:57:35,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2023-08-27 03:57:35,076 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-27 03:57:35,076 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 107 flow [2023-08-27 03:57:35,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:35,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:57:35,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:35,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1585005092, now seen corresponding path program 2 times [2023-08-27 03:57:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116507643] [2023-08-27 03:57:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:35,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:35,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116507643] [2023-08-27 03:57:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116507643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:57:35,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643531832] [2023-08-27 03:57:35,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:35,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:57:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:57:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:57:35,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-27 03:57:35,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:35,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-27 03:57:35,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:35,265 INFO L124 PetriNetUnfolderBase]: 80/189 cut-off events. [2023-08-27 03:57:35,265 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-27 03:57:35,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 189 events. 80/189 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 769 event pairs, 9 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 604. Up to 103 conditions per place. [2023-08-27 03:57:35,266 INFO L140 encePairwiseOnDemand]: 172/176 looper letters, 36 selfloop transitions, 2 changer transitions 7/47 dead transitions. [2023-08-27 03:57:35,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 314 flow [2023-08-27 03:57:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-08-27 03:57:35,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511363636363636 [2023-08-27 03:57:35,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-08-27 03:57:35,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-08-27 03:57:35,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:35,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-08-27 03:57:35,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,271 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 107 flow. Second operand 5 states and 397 transitions. [2023-08-27 03:57:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 314 flow [2023-08-27 03:57:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 03:57:35,274 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 114 flow [2023-08-27 03:57:35,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-27 03:57:35,274 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-27 03:57:35,275 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 114 flow [2023-08-27 03:57:35,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:35,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:35,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:57:35,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:35,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1669569230, now seen corresponding path program 3 times [2023-08-27 03:57:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67648039] [2023-08-27 03:57:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:35,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:35,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67648039] [2023-08-27 03:57:35,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67648039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:35,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:35,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:57:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113229691] [2023-08-27 03:57:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:35,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:57:35,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:57:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:57:35,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2023-08-27 03:57:35,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:35,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2023-08-27 03:57:35,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:35,462 INFO L124 PetriNetUnfolderBase]: 153/305 cut-off events. [2023-08-27 03:57:35,463 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2023-08-27 03:57:35,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 305 events. 153/305 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1217 event pairs, 51 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1030. Up to 120 conditions per place. [2023-08-27 03:57:35,464 INFO L140 encePairwiseOnDemand]: 172/176 looper letters, 26 selfloop transitions, 1 changer transitions 20/48 dead transitions. [2023-08-27 03:57:35,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 322 flow [2023-08-27 03:57:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-27 03:57:35,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-08-27 03:57:35,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-27 03:57:35,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-27 03:57:35,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:35,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-27 03:57:35,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,469 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 114 flow. Second operand 5 states and 388 transitions. [2023-08-27 03:57:35,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 322 flow [2023-08-27 03:57:35,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 318 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 03:57:35,472 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 114 flow [2023-08-27 03:57:35,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-08-27 03:57:35,472 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-27 03:57:35,473 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 114 flow [2023-08-27 03:57:35,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:35,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:57:35,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:35,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:35,474 INFO L85 PathProgramCache]: Analyzing trace with hash -654614988, now seen corresponding path program 4 times [2023-08-27 03:57:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:35,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542000893] [2023-08-27 03:57:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542000893] [2023-08-27 03:57:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542000893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:35,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:35,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:57:35,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712792873] [2023-08-27 03:57:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:35,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:57:35,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:57:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:57:35,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-27 03:57:35,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:35,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-27 03:57:35,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:35,680 INFO L124 PetriNetUnfolderBase]: 113/236 cut-off events. [2023-08-27 03:57:35,680 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-27 03:57:35,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 236 events. 113/236 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 898 event pairs, 19 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 838. Up to 154 conditions per place. [2023-08-27 03:57:35,681 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-27 03:57:35,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 287 flow [2023-08-27 03:57:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-08-27 03:57:35,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42159090909090907 [2023-08-27 03:57:35,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-08-27 03:57:35,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-08-27 03:57:35,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:35,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-08-27 03:57:35,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,686 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,686 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 114 flow. Second operand 5 states and 371 transitions. [2023-08-27 03:57:35,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 287 flow [2023-08-27 03:57:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 282 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 03:57:35,688 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-27 03:57:35,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-27 03:57:35,689 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-27 03:57:35,689 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-27 03:57:35,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:35,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:57:35,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:57:35,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:57:35,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:57:35,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:57:35,694 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-08-27 03:57:35,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:57:35,698 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:57:35,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:57:35 BasicIcfg [2023-08-27 03:57:35,701 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:57:35,701 INFO L158 Benchmark]: Toolchain (without parser) took 5262.89ms. Allocated memory was 411.0MB in the beginning and 509.6MB in the end (delta: 98.6MB). Free memory was 386.0MB in the beginning and 316.4MB in the end (delta: 69.6MB). Peak memory consumption was 168.7MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,701 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 411.0MB. Free memory is still 387.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:57:35,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.51ms. Allocated memory is still 411.0MB. Free memory was 385.5MB in the beginning and 365.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,702 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 411.0MB. Free memory was 365.5MB in the beginning and 363.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,702 INFO L158 Benchmark]: Boogie Preprocessor took 45.52ms. Allocated memory is still 411.0MB. Free memory was 363.4MB in the beginning and 362.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,702 INFO L158 Benchmark]: RCFGBuilder took 381.99ms. Allocated memory is still 411.0MB. Free memory was 362.0MB in the beginning and 345.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,703 INFO L158 Benchmark]: TraceAbstraction took 4269.40ms. Allocated memory was 411.0MB in the beginning and 509.6MB in the end (delta: 98.6MB). Free memory was 345.2MB in the beginning and 316.4MB in the end (delta: 28.8MB). Peak memory consumption was 128.8MB. Max. memory is 16.0GB. [2023-08-27 03:57:35,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 411.0MB. Free memory is still 387.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 508.51ms. Allocated memory is still 411.0MB. Free memory was 385.5MB in the beginning and 365.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 411.0MB. Free memory was 365.5MB in the beginning and 363.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.52ms. Allocated memory is still 411.0MB. Free memory was 363.4MB in the beginning and 362.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 381.99ms. Allocated memory is still 411.0MB. Free memory was 362.0MB in the beginning and 345.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4269.40ms. Allocated memory was 411.0MB in the beginning and 509.6MB in the end (delta: 98.6MB). Free memory was 345.2MB in the beginning and 316.4MB in the end (delta: 28.8MB). Peak memory consumption was 128.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 99 PlacesBefore, 35 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 5938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3040, independent: 2884, independent conditional: 0, independent unconditional: 2884, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1239, independent: 1197, independent conditional: 0, independent unconditional: 1197, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3040, independent: 1687, independent conditional: 0, independent unconditional: 1687, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 1239, unknown conditional: 0, unknown unconditional: 1239] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 99, Positive conditional cache size: 0, Positive unconditional cache size: 99, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 735]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 735]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 750]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 750]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 16 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: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 11 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-08-27 03:57:35,728 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...