/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:16:55,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:16:55,494 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 10:16:55,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:16:55,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:16:55,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:16:55,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:16:55,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:16:55,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:16:55,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:16:55,544 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:16:55,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:16:55,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:16:55,545 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:16:55,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:16:55,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:16:55,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:16:55,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:16:55,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:16:55,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:16:55,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:16:55,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:16:55,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:16:55,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:16:55,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:16:55,549 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:16:55,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:16:55,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:16:55,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:16:55,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:16:55,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:16:55,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:16:55,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:16:55,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:16:55,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:16:55,552 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:16:55,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:16:55,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:16:55,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:16:55,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:16:55,907 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:16:55,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:16:57,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:16:57,392 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:16:57,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:16:57,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c74b4a1a/32ec970adcf94e3a83709f6a13a309a4/FLAGf5aef48e4 [2023-08-27 10:16:57,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c74b4a1a/32ec970adcf94e3a83709f6a13a309a4 [2023-08-27 10:16:57,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:16:57,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:16:57,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:16:57,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:16:57,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:16:57,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5301be8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57, skipping insertion in model container [2023-08-27 10:16:57,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,465 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:16:57,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:16:57,772 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:16:57,799 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:16:57,801 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:16:57,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:16:57,865 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:16:57,866 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:16:57,871 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:16:57,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57 WrapperNode [2023-08-27 10:16:57,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:16:57,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:16:57,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:16:57,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:16:57,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,916 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 10:16:57,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:16:57,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:16:57,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:16:57,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:16:57,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:16:57,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:16:57,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:16:57,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:16:57,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (1/1) ... [2023-08-27 10:16:57,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:16:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:16:57,999 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 10:16:58,021 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 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:16:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:16:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:16:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:16:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:16:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:16:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:16:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:16:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:16:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:16:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:16:58,043 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 10:16:58,179 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:16:58,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:16:58,325 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:16:58,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:16:58,348 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:16:58,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:16:58 BoogieIcfgContainer [2023-08-27 10:16:58,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:16:58,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:16:58,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:16:58,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:16:58,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:16:57" (1/3) ... [2023-08-27 10:16:58,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a38d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:16:58, skipping insertion in model container [2023-08-27 10:16:58,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:57" (2/3) ... [2023-08-27 10:16:58,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a38d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:16:58, skipping insertion in model container [2023-08-27 10:16:58,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:16:58" (3/3) ... [2023-08-27 10:16:58,357 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:16:58,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:16:58,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 10:16:58,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:16:58,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:16:58,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-27 10:16:58,485 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-27 10:16:58,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:16:58,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 10:16:58,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-27 10:16:58,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 91 transitions, 191 flow [2023-08-27 10:16:58,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:16:58,508 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-27 10:16:58,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-27 10:16:58,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 191 flow [2023-08-27 10:16:58,539 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-27 10:16:58,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:16:58,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 10:16:58,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 2146 [2023-08-27 10:17:00,726 INFO L134 LiptonReduction]: Checked pairs total: 5701 [2023-08-27 10:17:00,726 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-27 10:17:00,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:17:00,743 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;@15e6a3a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:17:00,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 10:17:00,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:17:00,745 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:17:00,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:17:00,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:00,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:17:00,747 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 10:17:00,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 335243082, now seen corresponding path program 1 times [2023-08-27 10:17:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511194288] [2023-08-27 10:17:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:00,957 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 10:17:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:00,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511194288] [2023-08-27 10:17:00,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511194288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:00,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:17:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129526721] [2023-08-27 10:17:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:17:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:17:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:17:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-27 10:17:00,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 10:17:00,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:00,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-27 10:17:00,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:01,128 INFO L124 PetriNetUnfolderBase]: 496/815 cut-off events. [2023-08-27 10:17:01,129 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 10:17:01,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 815 events. 496/815 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 3781 event pairs, 127 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 1648. Up to 710 conditions per place. [2023-08-27 10:17:01,142 INFO L140 encePairwiseOnDemand]: 169/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-27 10:17:01,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-08-27 10:17:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:17:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:17:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-27 10:17:01,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49906890130353815 [2023-08-27 10:17:01,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-27 10:17:01,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-27 10:17:01,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:01,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-27 10:17:01,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:01,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 10:17:01,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 10:17:01,171 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 55 flow. Second operand 3 states and 268 transitions. [2023-08-27 10:17:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-08-27 10:17:01,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:17:01,178 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 88 flow [2023-08-27 10:17:01,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-27 10:17:01,188 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-27 10:17:01,189 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 88 flow [2023-08-27 10:17:01,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 10:17:01,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:01,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:01,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:17:01,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:01,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1895373939, now seen corresponding path program 1 times [2023-08-27 10:17:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077883504] [2023-08-27 10:17:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:01,468 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 10:17:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077883504] [2023-08-27 10:17:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077883504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:01,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:01,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:17:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136362882] [2023-08-27 10:17:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:01,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:17:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:17:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:17:01,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:01,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 10:17:01,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:01,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:01,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:01,599 INFO L124 PetriNetUnfolderBase]: 543/984 cut-off events. [2023-08-27 10:17:01,600 INFO L125 PetriNetUnfolderBase]: For 176/206 co-relation queries the response was YES. [2023-08-27 10:17:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 984 events. 543/984 cut-off events. For 176/206 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5502 event pairs, 201 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 2442. Up to 695 conditions per place. [2023-08-27 10:17:01,607 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 36 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-08-27 10:17:01,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 233 flow [2023-08-27 10:17:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:17:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:17:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-27 10:17:01,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48044692737430167 [2023-08-27 10:17:01,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-27 10:17:01,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-27 10:17:01,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:01,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-27 10:17:01,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 10:17:01,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 10:17:01,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 10:17:01,618 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 88 flow. Second operand 3 states and 258 transitions. [2023-08-27 10:17:01,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 233 flow [2023-08-27 10:17:01,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:01,621 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 122 flow [2023-08-27 10:17:01,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 10:17:01,622 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 10:17:01,623 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 122 flow [2023-08-27 10:17:01,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 10:17:01,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:01,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:17:01,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:01,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1339887208, now seen corresponding path program 1 times [2023-08-27 10:17:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260202247] [2023-08-27 10:17:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:01,705 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 10:17:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260202247] [2023-08-27 10:17:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260202247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:01,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843880877] [2023-08-27 10:17:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:01,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-27 10:17:01,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 10:17:01,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:01,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-27 10:17:01,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:01,824 INFO L124 PetriNetUnfolderBase]: 435/739 cut-off events. [2023-08-27 10:17:01,824 INFO L125 PetriNetUnfolderBase]: For 436/448 co-relation queries the response was YES. [2023-08-27 10:17:01,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 739 events. 435/739 cut-off events. For 436/448 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3602 event pairs, 87 based on Foata normal form. 12/598 useless extension candidates. Maximal degree in co-relation 2156. Up to 589 conditions per place. [2023-08-27 10:17:01,829 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 33 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-27 10:17:01,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 234 flow [2023-08-27 10:17:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-27 10:17:01,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720670391061452 [2023-08-27 10:17:01,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-27 10:17:01,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-27 10:17:01,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:01,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-27 10:17:01,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 10:17:01,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:01,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:01,836 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 122 flow. Second operand 4 states and 338 transitions. [2023-08-27 10:17:01,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 234 flow [2023-08-27 10:17:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:01,840 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 108 flow [2023-08-27 10:17:01,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 10:17:01,842 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-27 10:17:01,842 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 108 flow [2023-08-27 10:17:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 10:17:01,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:01,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:17:01,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:01,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1956783677, now seen corresponding path program 1 times [2023-08-27 10:17:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896258982] [2023-08-27 10:17:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:01,925 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 10:17:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896258982] [2023-08-27 10:17:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896258982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:01,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:01,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38366785] [2023-08-27 10:17:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:01,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-27 10:17:01,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 10:17:01,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:01,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-27 10:17:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:02,030 INFO L124 PetriNetUnfolderBase]: 294/512 cut-off events. [2023-08-27 10:17:02,030 INFO L125 PetriNetUnfolderBase]: For 332/344 co-relation queries the response was YES. [2023-08-27 10:17:02,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 512 events. 294/512 cut-off events. For 332/344 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2296 event pairs, 52 based on Foata normal form. 12/452 useless extension candidates. Maximal degree in co-relation 1471. Up to 199 conditions per place. [2023-08-27 10:17:02,034 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 43 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-08-27 10:17:02,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 298 flow [2023-08-27 10:17:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-27 10:17:02,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48743016759776536 [2023-08-27 10:17:02,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-27 10:17:02,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-27 10:17:02,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:02,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-27 10:17:02,038 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 10:17:02,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,040 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,040 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 108 flow. Second operand 4 states and 349 transitions. [2023-08-27 10:17:02,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 298 flow [2023-08-27 10:17:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:02,043 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 147 flow [2023-08-27 10:17:02,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 10:17:02,045 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 10:17:02,045 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 147 flow [2023-08-27 10:17:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 10:17:02,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:02,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:02,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:17:02,046 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 10:17:02,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1955659924, now seen corresponding path program 1 times [2023-08-27 10:17:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251930879] [2023-08-27 10:17:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:02,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:02,223 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 10:17:02,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:02,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251930879] [2023-08-27 10:17:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251930879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:02,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296276858] [2023-08-27 10:17:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:02,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:02,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 10:17:02,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:02,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:02,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:02,320 INFO L124 PetriNetUnfolderBase]: 319/568 cut-off events. [2023-08-27 10:17:02,320 INFO L125 PetriNetUnfolderBase]: For 739/739 co-relation queries the response was YES. [2023-08-27 10:17:02,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 568 events. 319/568 cut-off events. For 739/739 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2529 event pairs, 89 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 1870. Up to 308 conditions per place. [2023-08-27 10:17:02,324 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 43 selfloop transitions, 6 changer transitions 3/53 dead transitions. [2023-08-27 10:17:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 384 flow [2023-08-27 10:17:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-27 10:17:02,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46368715083798884 [2023-08-27 10:17:02,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-27 10:17:02,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-27 10:17:02,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:02,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-27 10:17:02,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 10:17:02,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,329 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,329 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 147 flow. Second operand 4 states and 332 transitions. [2023-08-27 10:17:02,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 384 flow [2023-08-27 10:17:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 350 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:02,334 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 177 flow [2023-08-27 10:17:02,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-27 10:17:02,336 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-27 10:17:02,336 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 177 flow [2023-08-27 10:17:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 10:17:02,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:02,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:02,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:17:02,337 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 10:17:02,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1372948092, now seen corresponding path program 1 times [2023-08-27 10:17:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539854915] [2023-08-27 10:17:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:02,457 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 10:17:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539854915] [2023-08-27 10:17:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539854915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027931811] [2023-08-27 10:17:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:02,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 10:17:02,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:02,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:02,552 INFO L124 PetriNetUnfolderBase]: 306/546 cut-off events. [2023-08-27 10:17:02,552 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2023-08-27 10:17:02,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 546 events. 306/546 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2469 event pairs, 77 based on Foata normal form. 6/537 useless extension candidates. Maximal degree in co-relation 1880. Up to 370 conditions per place. [2023-08-27 10:17:02,556 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 45 selfloop transitions, 9 changer transitions 3/58 dead transitions. [2023-08-27 10:17:02,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 416 flow [2023-08-27 10:17:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-08-27 10:17:02,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46787709497206703 [2023-08-27 10:17:02,558 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-08-27 10:17:02,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-08-27 10:17:02,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:02,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-08-27 10:17:02,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 10:17:02,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 10:17:02,561 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 177 flow. Second operand 4 states and 335 transitions. [2023-08-27 10:17:02,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 416 flow [2023-08-27 10:17:02,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:02,564 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 231 flow [2023-08-27 10:17:02,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-27 10:17:02,567 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-27 10:17:02,567 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 231 flow [2023-08-27 10:17:02,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 10:17:02,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:02,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:17:02,568 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 10:17:02,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -388255221, now seen corresponding path program 1 times [2023-08-27 10:17:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821808571] [2023-08-27 10:17:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:02,691 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 10:17:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821808571] [2023-08-27 10:17:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821808571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:02,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105049670] [2023-08-27 10:17:02,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:02,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:17:02,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 10:17:02,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:02,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:17:02,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:02,816 INFO L124 PetriNetUnfolderBase]: 500/839 cut-off events. [2023-08-27 10:17:02,816 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-08-27 10:17:02,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 839 events. 500/839 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3651 event pairs, 150 based on Foata normal form. 30/842 useless extension candidates. Maximal degree in co-relation 3241. Up to 298 conditions per place. [2023-08-27 10:17:02,822 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 65 selfloop transitions, 6 changer transitions 6/77 dead transitions. [2023-08-27 10:17:02,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 641 flow [2023-08-27 10:17:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2023-08-27 10:17:02,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547486033519553 [2023-08-27 10:17:02,824 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 407 transitions. [2023-08-27 10:17:02,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 407 transitions. [2023-08-27 10:17:02,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:02,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 407 transitions. [2023-08-27 10:17:02,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 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 10:17:02,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:02,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:02,827 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 231 flow. Second operand 5 states and 407 transitions. [2023-08-27 10:17:02,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 641 flow [2023-08-27 10:17:02,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:02,833 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 305 flow [2023-08-27 10:17:02,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-27 10:17:02,833 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-27 10:17:02,834 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 305 flow [2023-08-27 10:17:02,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 10:17:02,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:02,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:02,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:17:02,834 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 10:17:02,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 848078957, now seen corresponding path program 1 times [2023-08-27 10:17:02,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:02,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954408445] [2023-08-27 10:17:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:02,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:02,921 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 10:17:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954408445] [2023-08-27 10:17:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954408445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:02,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:02,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:02,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329585381] [2023-08-27 10:17:02,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:02,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:02,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:02,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:17:02,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 10:17:02,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:02,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:17:02,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:03,081 INFO L124 PetriNetUnfolderBase]: 563/1020 cut-off events. [2023-08-27 10:17:03,081 INFO L125 PetriNetUnfolderBase]: For 3582/3585 co-relation queries the response was YES. [2023-08-27 10:17:03,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 1020 events. 563/1020 cut-off events. For 3582/3585 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5437 event pairs, 93 based on Foata normal form. 24/993 useless extension candidates. Maximal degree in co-relation 4353. Up to 460 conditions per place. [2023-08-27 10:17:03,088 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 79 selfloop transitions, 12 changer transitions 6/98 dead transitions. [2023-08-27 10:17:03,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 973 flow [2023-08-27 10:17:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 408 transitions. [2023-08-27 10:17:03,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558659217877095 [2023-08-27 10:17:03,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 408 transitions. [2023-08-27 10:17:03,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 408 transitions. [2023-08-27 10:17:03,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:03,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 408 transitions. [2023-08-27 10:17:03,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:03,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,093 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 305 flow. Second operand 5 states and 408 transitions. [2023-08-27 10:17:03,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 973 flow [2023-08-27 10:17:03,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 962 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:03,104 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 491 flow [2023-08-27 10:17:03,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-27 10:17:03,106 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2023-08-27 10:17:03,106 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 491 flow [2023-08-27 10:17:03,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 10:17:03,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:03,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:03,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:17:03,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:03,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash 547886267, now seen corresponding path program 1 times [2023-08-27 10:17:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:03,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329117677] [2023-08-27 10:17:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:03,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:03,218 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 10:17:03,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:03,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329117677] [2023-08-27 10:17:03,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329117677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:03,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874378374] [2023-08-27 10:17:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:03,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:03,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:03,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 10:17:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:03,341 INFO L124 PetriNetUnfolderBase]: 387/793 cut-off events. [2023-08-27 10:17:03,341 INFO L125 PetriNetUnfolderBase]: For 6111/6130 co-relation queries the response was YES. [2023-08-27 10:17:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 793 events. 387/793 cut-off events. For 6111/6130 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4851 event pairs, 101 based on Foata normal form. 115/809 useless extension candidates. Maximal degree in co-relation 3626. Up to 539 conditions per place. [2023-08-27 10:17:03,347 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 70 selfloop transitions, 8 changer transitions 3/88 dead transitions. [2023-08-27 10:17:03,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 941 flow [2023-08-27 10:17:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-27 10:17:03,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670391061452514 [2023-08-27 10:17:03,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-27 10:17:03,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-27 10:17:03,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:03,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-27 10:17:03,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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 10:17:03,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,352 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 491 flow. Second operand 5 states and 418 transitions. [2023-08-27 10:17:03,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 941 flow [2023-08-27 10:17:03,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 936 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:03,364 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 578 flow [2023-08-27 10:17:03,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-27 10:17:03,364 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-08-27 10:17:03,364 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 578 flow [2023-08-27 10:17:03,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 10:17:03,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:03,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:03,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:17:03,365 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:03,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1458831623, now seen corresponding path program 1 times [2023-08-27 10:17:03,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:03,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778571649] [2023-08-27 10:17:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:03,411 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 10:17:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778571649] [2023-08-27 10:17:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778571649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:03,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:03,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:03,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799407285] [2023-08-27 10:17:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:03,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:03,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:03,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-27 10:17:03,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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 10:17:03,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:03,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-27 10:17:03,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:03,525 INFO L124 PetriNetUnfolderBase]: 342/676 cut-off events. [2023-08-27 10:17:03,525 INFO L125 PetriNetUnfolderBase]: For 3990/4001 co-relation queries the response was YES. [2023-08-27 10:17:03,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 676 events. 342/676 cut-off events. For 3990/4001 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3912 event pairs, 34 based on Foata normal form. 11/654 useless extension candidates. Maximal degree in co-relation 3419. Up to 253 conditions per place. [2023-08-27 10:17:03,528 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 19 selfloop transitions, 10 changer transitions 53/84 dead transitions. [2023-08-27 10:17:03,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 1140 flow [2023-08-27 10:17:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-27 10:17:03,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47262569832402235 [2023-08-27 10:17:03,530 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-27 10:17:03,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-27 10:17:03,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:03,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-27 10:17:03,531 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 10:17:03,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:03,533 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 578 flow. Second operand 5 states and 423 transitions. [2023-08-27 10:17:03,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 1140 flow [2023-08-27 10:17:03,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 1129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:03,544 INFO L231 Difference]: Finished difference. Result has 63 places, 22 transitions, 167 flow [2023-08-27 10:17:03,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=22} [2023-08-27 10:17:03,544 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-27 10:17:03,545 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 22 transitions, 167 flow [2023-08-27 10:17:03,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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 10:17:03,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:03,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:03,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:17:03,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:03,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash 652002458, now seen corresponding path program 1 times [2023-08-27 10:17:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:03,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146034203] [2023-08-27 10:17:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:03,637 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 10:17:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146034203] [2023-08-27 10:17:03,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146034203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:03,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:03,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:03,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121132694] [2023-08-27 10:17:03,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:03,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:03,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:03,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 22 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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 10:17:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:03,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:03,690 INFO L124 PetriNetUnfolderBase]: 32/81 cut-off events. [2023-08-27 10:17:03,690 INFO L125 PetriNetUnfolderBase]: For 776/784 co-relation queries the response was YES. [2023-08-27 10:17:03,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 81 events. 32/81 cut-off events. For 776/784 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 208 event pairs, 5 based on Foata normal form. 17/97 useless extension candidates. Maximal degree in co-relation 400. Up to 30 conditions per place. [2023-08-27 10:17:03,691 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 18 selfloop transitions, 7 changer transitions 10/37 dead transitions. [2023-08-27 10:17:03,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 37 transitions, 357 flow [2023-08-27 10:17:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:17:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:17:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 481 transitions. [2023-08-27 10:17:03,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478584729981378 [2023-08-27 10:17:03,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 481 transitions. [2023-08-27 10:17:03,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 481 transitions. [2023-08-27 10:17:03,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:03,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 481 transitions. [2023-08-27 10:17:03,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 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 10:17:03,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 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 10:17:03,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 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 10:17:03,697 INFO L175 Difference]: Start difference. First operand has 63 places, 22 transitions, 167 flow. Second operand 6 states and 481 transitions. [2023-08-27 10:17:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 37 transitions, 357 flow [2023-08-27 10:17:03,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 208 flow, removed 26 selfloop flow, removed 22 redundant places. [2023-08-27 10:17:03,699 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 113 flow [2023-08-27 10:17:03,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2023-08-27 10:17:03,700 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-27 10:17:03,700 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 113 flow [2023-08-27 10:17:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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 10:17:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:03,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:17:03,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:03,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1250266559, now seen corresponding path program 1 times [2023-08-27 10:17:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825923392] [2023-08-27 10:17:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:03,815 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 10:17:03,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825923392] [2023-08-27 10:17:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825923392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:03,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:17:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015347554] [2023-08-27 10:17:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:03,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:17:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:17:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:17:03,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:17:03,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 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 10:17:03,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:03,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:17:03,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:03,868 INFO L124 PetriNetUnfolderBase]: 17/50 cut-off events. [2023-08-27 10:17:03,868 INFO L125 PetriNetUnfolderBase]: For 101/111 co-relation queries the response was YES. [2023-08-27 10:17:03,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 50 events. 17/50 cut-off events. For 101/111 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 2 based on Foata normal form. 8/57 useless extension candidates. Maximal degree in co-relation 191. Up to 14 conditions per place. [2023-08-27 10:17:03,868 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 15 selfloop transitions, 10 changer transitions 5/32 dead transitions. [2023-08-27 10:17:03,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 207 flow [2023-08-27 10:17:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:17:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:17:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-08-27 10:17:03,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4389465283320032 [2023-08-27 10:17:03,871 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-08-27 10:17:03,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-08-27 10:17:03,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:03,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-08-27 10:17:03,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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 10:17:03,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 10:17:03,875 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 10:17:03,875 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 113 flow. Second operand 7 states and 550 transitions. [2023-08-27 10:17:03,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 207 flow [2023-08-27 10:17:03,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 32 transitions, 187 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 10:17:03,877 INFO L231 Difference]: Finished difference. Result has 44 places, 22 transitions, 125 flow [2023-08-27 10:17:03,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=22} [2023-08-27 10:17:03,877 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-27 10:17:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 22 transitions, 125 flow [2023-08-27 10:17:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 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 10:17:03,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:03,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:03,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:17:03,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:17:03,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash -223670492, now seen corresponding path program 1 times [2023-08-27 10:17:03,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:03,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189266608] [2023-08-27 10:17:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:03,973 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 10:17:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189266608] [2023-08-27 10:17:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189266608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:03,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359959350] [2023-08-27 10:17:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:03,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:03,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:17:03,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 22 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:17:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:04,006 INFO L124 PetriNetUnfolderBase]: 18/49 cut-off events. [2023-08-27 10:17:04,007 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-27 10:17:04,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 49 events. 18/49 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 3 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 197. Up to 27 conditions per place. [2023-08-27 10:17:04,007 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-27 10:17:04,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 27 transitions, 207 flow [2023-08-27 10:17:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 379 transitions. [2023-08-27 10:17:04,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423463687150838 [2023-08-27 10:17:04,009 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 379 transitions. [2023-08-27 10:17:04,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 379 transitions. [2023-08-27 10:17:04,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:04,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 379 transitions. [2023-08-27 10:17:04,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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 10:17:04,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:04,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 10:17:04,012 INFO L175 Difference]: Start difference. First operand has 44 places, 22 transitions, 125 flow. Second operand 5 states and 379 transitions. [2023-08-27 10:17:04,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 27 transitions, 207 flow [2023-08-27 10:17:04,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 10:17:04,013 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-27 10:17:04,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-27 10:17:04,014 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-27 10:17:04,014 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-27 10:17:04,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:04,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 10:17:04,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 10:17:04,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 10:17:04,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 10:17:04,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 10:17:04,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 10:17:04,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 10:17:04,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 10:17:04,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 10:17:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:17:04,019 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:04,023 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:17:04,023 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:17:04,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:17:04 BasicIcfg [2023-08-27 10:17:04,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:17:04,026 INFO L158 Benchmark]: Toolchain (without parser) took 6606.59ms. Allocated memory was 341.8MB in the beginning and 501.2MB in the end (delta: 159.4MB). Free memory was 317.0MB in the beginning and 417.4MB in the end (delta: -100.4MB). Peak memory consumption was 57.7MB. Max. memory is 16.0GB. [2023-08-27 10:17:04,027 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 341.8MB. Free memory was 319.7MB in the beginning and 319.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:17:04,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.53ms. Allocated memory is still 341.8MB. Free memory was 316.5MB in the beginning and 296.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 10:17:04,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.24ms. Allocated memory is still 341.8MB. Free memory was 296.3MB in the beginning and 294.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:17:04,027 INFO L158 Benchmark]: Boogie Preprocessor took 32.36ms. Allocated memory is still 341.8MB. Free memory was 294.2MB in the beginning and 293.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:17:04,027 INFO L158 Benchmark]: RCFGBuilder took 398.67ms. Allocated memory is still 341.8MB. Free memory was 293.1MB in the beginning and 277.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:17:04,028 INFO L158 Benchmark]: TraceAbstraction took 5674.17ms. Allocated memory was 341.8MB in the beginning and 501.2MB in the end (delta: 159.4MB). Free memory was 276.3MB in the beginning and 417.4MB in the end (delta: -141.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.0GB. [2023-08-27 10:17:04,029 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 341.8MB. Free memory was 319.7MB in the beginning and 319.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 451.53ms. Allocated memory is still 341.8MB. Free memory was 316.5MB in the beginning and 296.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.24ms. Allocated memory is still 341.8MB. Free memory was 296.3MB in the beginning and 294.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.36ms. Allocated memory is still 341.8MB. Free memory was 294.2MB in the beginning and 293.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 398.67ms. Allocated memory is still 341.8MB. Free memory was 293.1MB in the beginning and 277.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5674.17ms. Allocated memory was 341.8MB in the beginning and 501.2MB in the end (delta: 159.4MB). Free memory was 276.3MB in the beginning and 417.4MB in the end (delta: -141.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 98 PlacesBefore, 33 PlacesAfterwards, 91 TransitionsBefore, 23 TransitionsAfterwards, 2146 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 5701 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2989, independent: 2820, independent conditional: 0, independent unconditional: 2820, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1208, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2989, independent: 1651, independent conditional: 0, independent unconditional: 1651, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 1208, unknown conditional: 0, unknown unconditional: 1208] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 745]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 745]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: 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, 121 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: 5.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 685 IncrementalHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 10 mSDtfsCounter, 685 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=9, InterpolantAutomatonStates: 60, 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, 1.3s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 10:17:04,043 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...