/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 -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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:26:17,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:26:17,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:26:17,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:26:17,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:26:17,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:26:17,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:26:17,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:26:17,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:26:17,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:26:17,543 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:26:17,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:26:17,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:26:17,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:26:17,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:26:17,545 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:26:17,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:26:17,546 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:26:17,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:26:17,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:26:17,547 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:26:17,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:26:17,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:26:17,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:26:17,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:26:17,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:26:17,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:26:17,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:26:17,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:26:17,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:26:17,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:26:17,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:26:17,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:26:17,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:26:17,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:26:17,859 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:26:17,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:19,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:26:19,411 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:26:19,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:19,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfd38c26/d531d8fbdff04be9acbc1dca17d0d043/FLAG6a3226077 [2023-08-26 21:26:19,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfd38c26/d531d8fbdff04be9acbc1dca17d0d043 [2023-08-26 21:26:19,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:26:19,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:26:19,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:26:19,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:26:19,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:26:19,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:19,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b04a17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19, skipping insertion in model container [2023-08-26 21:26:19,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:19,506 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:26:19,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:26:19,850 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:26:19,878 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:26:19,879 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:26:19,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:26:19,937 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:26:19,938 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:26:19,944 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:26:19,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19 WrapperNode [2023-08-26 21:26:19,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:26:19,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:26:19,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:26:19,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:26:19,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:19,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,004 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2023-08-26 21:26:20,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:26:20,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:26:20,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:26:20,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:26:20,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:26:20,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:26:20,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:26:20,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:26:20,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (1/1) ... [2023-08-26 21:26:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:26:20,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:26:20,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:26:20,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:26:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:26:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:26:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:26:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:26:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:26:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:26:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-26 21:26:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-26 21:26:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:26:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:26:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:26:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:26:20,129 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:26:20,283 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:26:20,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:26:20,436 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:26:20,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:26:20,464 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:26:20,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:26:20 BoogieIcfgContainer [2023-08-26 21:26:20,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:26:20,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:26:20,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:26:20,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:26:20,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:26:19" (1/3) ... [2023-08-26 21:26:20,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2930d687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:26:20, skipping insertion in model container [2023-08-26 21:26:20,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:19" (2/3) ... [2023-08-26 21:26:20,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2930d687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:26:20, skipping insertion in model container [2023-08-26 21:26:20,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:26:20" (3/3) ... [2023-08-26 21:26:20,479 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:20,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:26:20,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 21:26:20,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:26:20,564 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:26:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 110 transitions, 240 flow [2023-08-26 21:26:20,659 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2023-08-26 21:26:20,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:20,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 3/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-26 21:26:20,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 110 transitions, 240 flow [2023-08-26 21:26:20,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 106 transitions, 224 flow [2023-08-26 21:26:20,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:26:20,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 106 transitions, 224 flow [2023-08-26 21:26:20,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 106 transitions, 224 flow [2023-08-26 21:26:20,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 106 transitions, 224 flow [2023-08-26 21:26:20,705 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2023-08-26 21:26:20,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:20,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 3/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-26 21:26:20,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 3358 [2023-08-26 21:26:23,077 INFO L134 LiptonReduction]: Checked pairs total: 10227 [2023-08-26 21:26:23,077 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-26 21:26:23,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:26:23,093 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;@6d860f15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:26:23,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-26 21:26:23,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:26:23,097 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 21:26:23,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:23,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:23,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:26:23,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:23,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 380061398, now seen corresponding path program 1 times [2023-08-26 21:26:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624134750] [2023-08-26 21:26:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624134750] [2023-08-26 21:26:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624134750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597451940] [2023-08-26 21:26:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:23,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:23,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:23,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:23,927 INFO L124 PetriNetUnfolderBase]: 4076/5792 cut-off events. [2023-08-26 21:26:23,927 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-26 21:26:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 5792 events. 4076/5792 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 32079 event pairs, 1313 based on Foata normal form. 0/3334 useless extension candidates. Maximal degree in co-relation 11745. Up to 5548 conditions per place. [2023-08-26 21:26:23,974 INFO L140 encePairwiseOnDemand]: 192/206 looper letters, 39 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-26 21:26:23,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 201 flow [2023-08-26 21:26:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-26 21:26:23,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145631067961165 [2023-08-26 21:26:23,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-26 21:26:23,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-26 21:26:23,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:23,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-26 21:26:24,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,008 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 318 transitions. [2023-08-26 21:26:24,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 201 flow [2023-08-26 21:26:24,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 21:26:24,014 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 113 flow [2023-08-26 21:26:24,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-26 21:26:24,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-26 21:26:24,018 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 113 flow [2023-08-26 21:26:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:24,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:26:24,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:24,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1477073850, now seen corresponding path program 1 times [2023-08-26 21:26:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451492675] [2023-08-26 21:26:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451492675] [2023-08-26 21:26:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451492675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:24,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327620861] [2023-08-26 21:26:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:24,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:24,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:24,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:24,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:24,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:24,492 INFO L124 PetriNetUnfolderBase]: 2048/2936 cut-off events. [2023-08-26 21:26:24,492 INFO L125 PetriNetUnfolderBase]: For 146/152 co-relation queries the response was YES. [2023-08-26 21:26:24,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7592 conditions, 2936 events. 2048/2936 cut-off events. For 146/152 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14371 event pairs, 505 based on Foata normal form. 4/2106 useless extension candidates. Maximal degree in co-relation 7581. Up to 2691 conditions per place. [2023-08-26 21:26:24,516 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 35 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-26 21:26:24,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 209 flow [2023-08-26 21:26:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-08-26 21:26:24,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48058252427184467 [2023-08-26 21:26:24,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-08-26 21:26:24,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-08-26 21:26:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:24,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-08-26 21:26:24,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,523 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 113 flow. Second operand 4 states and 396 transitions. [2023-08-26 21:26:24,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 209 flow [2023-08-26 21:26:24,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:24,531 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 102 flow [2023-08-26 21:26:24,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-26 21:26:24,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-26 21:26:24,532 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 102 flow [2023-08-26 21:26:24,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:24,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:26:24,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:24,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1477073851, now seen corresponding path program 1 times [2023-08-26 21:26:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144644446] [2023-08-26 21:26:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144644446] [2023-08-26 21:26:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144644446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362774784] [2023-08-26 21:26:24,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:24,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:24,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:24,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:24,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:24,848 INFO L124 PetriNetUnfolderBase]: 1148/1698 cut-off events. [2023-08-26 21:26:24,848 INFO L125 PetriNetUnfolderBase]: For 452/458 co-relation queries the response was YES. [2023-08-26 21:26:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 1698 events. 1148/1698 cut-off events. For 452/458 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7597 event pairs, 191 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 4347. Up to 942 conditions per place. [2023-08-26 21:26:24,858 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 46 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-26 21:26:24,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 286 flow [2023-08-26 21:26:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2023-08-26 21:26:24,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987864077669903 [2023-08-26 21:26:24,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 411 transitions. [2023-08-26 21:26:24,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 411 transitions. [2023-08-26 21:26:24,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:24,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 411 transitions. [2023-08-26 21:26:24,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,864 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 102 flow. Second operand 4 states and 411 transitions. [2023-08-26 21:26:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 286 flow [2023-08-26 21:26:24,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:24,866 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 154 flow [2023-08-26 21:26:24,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-26 21:26:24,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-26 21:26:24,867 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 154 flow [2023-08-26 21:26:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:24,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:24,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:26:24,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:24,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2105832565, now seen corresponding path program 1 times [2023-08-26 21:26:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12265362] [2023-08-26 21:26:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:25,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12265362] [2023-08-26 21:26:25,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12265362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:25,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:25,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165954933] [2023-08-26 21:26:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:25,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:25,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:25,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:25,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:25,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:25,473 INFO L124 PetriNetUnfolderBase]: 3270/4805 cut-off events. [2023-08-26 21:26:25,473 INFO L125 PetriNetUnfolderBase]: For 4136/4136 co-relation queries the response was YES. [2023-08-26 21:26:25,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14727 conditions, 4805 events. 3270/4805 cut-off events. For 4136/4136 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 24360 event pairs, 1029 based on Foata normal form. 0/4250 useless extension candidates. Maximal degree in co-relation 14714. Up to 2713 conditions per place. [2023-08-26 21:26:25,510 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 55 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2023-08-26 21:26:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 422 flow [2023-08-26 21:26:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-26 21:26:25,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48058252427184467 [2023-08-26 21:26:25,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-26 21:26:25,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-26 21:26:25,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:25,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-26 21:26:25,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,516 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 154 flow. Second operand 3 states and 297 transitions. [2023-08-26 21:26:25,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 422 flow [2023-08-26 21:26:25,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 388 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:25,521 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 198 flow [2023-08-26 21:26:25,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-26 21:26:25,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-26 21:26:25,523 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 198 flow [2023-08-26 21:26:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:25,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:25,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:26:25,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:25,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash -856301375, now seen corresponding path program 1 times [2023-08-26 21:26:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249655601] [2023-08-26 21:26:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249655601] [2023-08-26 21:26:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249655601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117954130] [2023-08-26 21:26:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:25,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:25,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:25,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:25,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:25,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:25,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:26,170 INFO L124 PetriNetUnfolderBase]: 3147/4637 cut-off events. [2023-08-26 21:26:26,171 INFO L125 PetriNetUnfolderBase]: For 4094/4094 co-relation queries the response was YES. [2023-08-26 21:26:26,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16407 conditions, 4637 events. 3147/4637 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23661 event pairs, 322 based on Foata normal form. 21/4278 useless extension candidates. Maximal degree in co-relation 16392. Up to 2394 conditions per place. [2023-08-26 21:26:26,202 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 74 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-08-26 21:26:26,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 86 transitions, 588 flow [2023-08-26 21:26:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2023-08-26 21:26:26,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47815533980582525 [2023-08-26 21:26:26,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2023-08-26 21:26:26,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2023-08-26 21:26:26,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:26,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2023-08-26 21:26:26,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,208 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 198 flow. Second operand 4 states and 394 transitions. [2023-08-26 21:26:26,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 86 transitions, 588 flow [2023-08-26 21:26:26,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 86 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:26,217 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 282 flow [2023-08-26 21:26:26,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-08-26 21:26:26,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-26 21:26:26,220 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 282 flow [2023-08-26 21:26:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:26,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:26:26,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:26,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -856302305, now seen corresponding path program 1 times [2023-08-26 21:26:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667826218] [2023-08-26 21:26:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667826218] [2023-08-26 21:26:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667826218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:26,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869913501] [2023-08-26 21:26:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:26,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:26,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:26,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:26,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:26,829 INFO L124 PetriNetUnfolderBase]: 3048/4496 cut-off events. [2023-08-26 21:26:26,830 INFO L125 PetriNetUnfolderBase]: For 6644/6644 co-relation queries the response was YES. [2023-08-26 21:26:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17380 conditions, 4496 events. 3048/4496 cut-off events. For 6644/6644 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22622 event pairs, 553 based on Foata normal form. 27/4149 useless extension candidates. Maximal degree in co-relation 17362. Up to 2145 conditions per place. [2023-08-26 21:26:26,862 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 89 selfloop transitions, 16 changer transitions 0/105 dead transitions. [2023-08-26 21:26:26,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 105 transitions, 781 flow [2023-08-26 21:26:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-26 21:26:26,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817961165048544 [2023-08-26 21:26:26,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-26 21:26:26,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-26 21:26:26,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:26,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-26 21:26:26,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,871 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,872 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 282 flow. Second operand 4 states and 397 transitions. [2023-08-26 21:26:26,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 105 transitions, 781 flow [2023-08-26 21:26:26,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 105 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:26:26,885 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 430 flow [2023-08-26 21:26:26,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2023-08-26 21:26:26,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-26 21:26:26,889 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 430 flow [2023-08-26 21:26:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:26,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:26,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:26:26,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:26,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash -775541079, now seen corresponding path program 1 times [2023-08-26 21:26:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128577846] [2023-08-26 21:26:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128577846] [2023-08-26 21:26:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128577846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:27,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490538426] [2023-08-26 21:26:27,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:27,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:27,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:27,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:27,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:27,742 INFO L124 PetriNetUnfolderBase]: 4442/6612 cut-off events. [2023-08-26 21:26:27,742 INFO L125 PetriNetUnfolderBase]: For 18225/18225 co-relation queries the response was YES. [2023-08-26 21:26:27,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28678 conditions, 6612 events. 4442/6612 cut-off events. For 18225/18225 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 35599 event pairs, 561 based on Foata normal form. 127/6095 useless extension candidates. Maximal degree in co-relation 28655. Up to 3031 conditions per place. [2023-08-26 21:26:27,793 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 129 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2023-08-26 21:26:27,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 155 transitions, 1442 flow [2023-08-26 21:26:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:26:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:26:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2023-08-26 21:26:27,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47378640776699027 [2023-08-26 21:26:27,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2023-08-26 21:26:27,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2023-08-26 21:26:27,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:27,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2023-08-26 21:26:27,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,798 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,798 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 430 flow. Second operand 5 states and 488 transitions. [2023-08-26 21:26:27,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 155 transitions, 1442 flow [2023-08-26 21:26:27,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 1435 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:27,827 INFO L231 Difference]: Finished difference. Result has 60 places, 83 transitions, 827 flow [2023-08-26 21:26:27,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=827, PETRI_PLACES=60, PETRI_TRANSITIONS=83} [2023-08-26 21:26:27,827 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-26 21:26:27,827 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 83 transitions, 827 flow [2023-08-26 21:26:27,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:27,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:27,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:26:27,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:27,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:27,829 INFO L85 PathProgramCache]: Analyzing trace with hash 736475723, now seen corresponding path program 1 times [2023-08-26 21:26:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:27,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818365567] [2023-08-26 21:26:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:27,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818365567] [2023-08-26 21:26:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818365567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:27,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397774222] [2023-08-26 21:26:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:27,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:27,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 83 transitions, 827 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:27,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:27,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:27,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:28,621 INFO L124 PetriNetUnfolderBase]: 4389/6533 cut-off events. [2023-08-26 21:26:28,621 INFO L125 PetriNetUnfolderBase]: For 26729/26729 co-relation queries the response was YES. [2023-08-26 21:26:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31346 conditions, 6533 events. 4389/6533 cut-off events. For 26729/26729 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 35502 event pairs, 487 based on Foata normal form. 15/5910 useless extension candidates. Maximal degree in co-relation 31318. Up to 2915 conditions per place. [2023-08-26 21:26:28,674 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 101 selfloop transitions, 47 changer transitions 0/148 dead transitions. [2023-08-26 21:26:28,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 148 transitions, 1672 flow [2023-08-26 21:26:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-26 21:26:28,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720873786407767 [2023-08-26 21:26:28,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-26 21:26:28,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-26 21:26:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:28,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-26 21:26:28,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:28,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:28,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:28,679 INFO L175 Difference]: Start difference. First operand has 60 places, 83 transitions, 827 flow. Second operand 4 states and 389 transitions. [2023-08-26 21:26:28,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 148 transitions, 1672 flow [2023-08-26 21:26:28,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 148 transitions, 1672 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:26:28,733 INFO L231 Difference]: Finished difference. Result has 66 places, 106 transitions, 1375 flow [2023-08-26 21:26:28,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1375, PETRI_PLACES=66, PETRI_TRANSITIONS=106} [2023-08-26 21:26:28,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-26 21:26:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 106 transitions, 1375 flow [2023-08-26 21:26:28,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:28,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:28,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:26:28,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:28,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 857167779, now seen corresponding path program 1 times [2023-08-26 21:26:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877155752] [2023-08-26 21:26:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877155752] [2023-08-26 21:26:28,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877155752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:28,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452101090] [2023-08-26 21:26:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:28,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:28,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:28,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:28,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 106 transitions, 1375 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:28,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:28,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:29,323 INFO L124 PetriNetUnfolderBase]: 2874/4322 cut-off events. [2023-08-26 21:26:29,324 INFO L125 PetriNetUnfolderBase]: For 37720/39470 co-relation queries the response was YES. [2023-08-26 21:26:29,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22651 conditions, 4322 events. 2874/4322 cut-off events. For 37720/39470 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 24604 event pairs, 132 based on Foata normal form. 1018/5209 useless extension candidates. Maximal degree in co-relation 22618. Up to 1471 conditions per place. [2023-08-26 21:26:29,373 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 196 selfloop transitions, 13 changer transitions 0/231 dead transitions. [2023-08-26 21:26:29,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 3457 flow [2023-08-26 21:26:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:26:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:26:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2023-08-26 21:26:29,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970873786407767 [2023-08-26 21:26:29,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2023-08-26 21:26:29,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2023-08-26 21:26:29,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:29,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2023-08-26 21:26:29,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:29,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:29,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:29,379 INFO L175 Difference]: Start difference. First operand has 66 places, 106 transitions, 1375 flow. Second operand 5 states and 512 transitions. [2023-08-26 21:26:29,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 3457 flow [2023-08-26 21:26:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 3435 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:29,416 INFO L231 Difference]: Finished difference. Result has 70 places, 110 transitions, 1441 flow [2023-08-26 21:26:29,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1441, PETRI_PLACES=70, PETRI_TRANSITIONS=110} [2023-08-26 21:26:29,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-26 21:26:29,418 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 110 transitions, 1441 flow [2023-08-26 21:26:29,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:29,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:29,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:29,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:26:29,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:29,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1704795267, now seen corresponding path program 1 times [2023-08-26 21:26:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623866326] [2023-08-26 21:26:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:29,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:29,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623866326] [2023-08-26 21:26:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623866326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:29,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18196677] [2023-08-26 21:26:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:29,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-08-26 21:26:29,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 110 transitions, 1441 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:29,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:29,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-08-26 21:26:29,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:30,177 INFO L124 PetriNetUnfolderBase]: 3851/5823 cut-off events. [2023-08-26 21:26:30,177 INFO L125 PetriNetUnfolderBase]: For 43632/44319 co-relation queries the response was YES. [2023-08-26 21:26:30,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33740 conditions, 5823 events. 3851/5823 cut-off events. For 43632/44319 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32974 event pairs, 879 based on Foata normal form. 520/6185 useless extension candidates. Maximal degree in co-relation 33705. Up to 3194 conditions per place. [2023-08-26 21:26:30,244 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 118 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2023-08-26 21:26:30,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 2106 flow [2023-08-26 21:26:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-26 21:26:30,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967637540453074 [2023-08-26 21:26:30,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-26 21:26:30,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-26 21:26:30,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:30,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-26 21:26:30,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 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) [2023-08-26 21:26:30,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:30,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:30,248 INFO L175 Difference]: Start difference. First operand has 70 places, 110 transitions, 1441 flow. Second operand 3 states and 307 transitions. [2023-08-26 21:26:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 2106 flow [2023-08-26 21:26:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 147 transitions, 2040 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-26 21:26:30,379 INFO L231 Difference]: Finished difference. Result has 70 places, 110 transitions, 1466 flow [2023-08-26 21:26:30,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1466, PETRI_PLACES=70, PETRI_TRANSITIONS=110} [2023-08-26 21:26:30,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-26 21:26:30,381 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 110 transitions, 1466 flow [2023-08-26 21:26:30,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:30,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:30,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:30,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:26:30,382 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:30,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1690800348, now seen corresponding path program 1 times [2023-08-26 21:26:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898009638] [2023-08-26 21:26:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898009638] [2023-08-26 21:26:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898009638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:30,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:30,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728056781] [2023-08-26 21:26:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:30,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-26 21:26:30,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 110 transitions, 1466 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:30,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:30,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-26 21:26:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:31,098 INFO L124 PetriNetUnfolderBase]: 3513/5595 cut-off events. [2023-08-26 21:26:31,098 INFO L125 PetriNetUnfolderBase]: For 59799/63016 co-relation queries the response was YES. [2023-08-26 21:26:31,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29714 conditions, 5595 events. 3513/5595 cut-off events. For 59799/63016 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 35810 event pairs, 565 based on Foata normal form. 2546/7939 useless extension candidates. Maximal degree in co-relation 29679. Up to 4002 conditions per place. [2023-08-26 21:26:31,163 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 178 selfloop transitions, 10 changer transitions 4/214 dead transitions. [2023-08-26 21:26:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 214 transitions, 3183 flow [2023-08-26 21:26:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:26:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:26:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2023-08-26 21:26:31,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47766990291262135 [2023-08-26 21:26:31,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2023-08-26 21:26:31,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2023-08-26 21:26:31,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:31,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2023-08-26 21:26:31,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:31,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:31,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:31,169 INFO L175 Difference]: Start difference. First operand has 70 places, 110 transitions, 1466 flow. Second operand 5 states and 492 transitions. [2023-08-26 21:26:31,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 214 transitions, 3183 flow [2023-08-26 21:26:31,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 214 transitions, 3122 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:31,335 INFO L231 Difference]: Finished difference. Result has 76 places, 111 transitions, 1499 flow [2023-08-26 21:26:31,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1499, PETRI_PLACES=76, PETRI_TRANSITIONS=111} [2023-08-26 21:26:31,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-26 21:26:31,336 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 111 transitions, 1499 flow [2023-08-26 21:26:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:31,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:31,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:31,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:26:31,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:31,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 429240463, now seen corresponding path program 1 times [2023-08-26 21:26:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566410806] [2023-08-26 21:26:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:31,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:31,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566410806] [2023-08-26 21:26:31,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566410806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:31,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610226594] [2023-08-26 21:26:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:31,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:31,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-08-26 21:26:31,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 111 transitions, 1499 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:31,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:31,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-08-26 21:26:31,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:32,255 INFO L124 PetriNetUnfolderBase]: 4647/7432 cut-off events. [2023-08-26 21:26:32,255 INFO L125 PetriNetUnfolderBase]: For 62038/62848 co-relation queries the response was YES. [2023-08-26 21:26:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42023 conditions, 7432 events. 4647/7432 cut-off events. For 62038/62848 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 48568 event pairs, 1184 based on Foata normal form. 527/7678 useless extension candidates. Maximal degree in co-relation 41984. Up to 4047 conditions per place. [2023-08-26 21:26:32,313 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 128 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2023-08-26 21:26:32,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 155 transitions, 2206 flow [2023-08-26 21:26:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-26 21:26:32,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032362459546925 [2023-08-26 21:26:32,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-26 21:26:32,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-26 21:26:32,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:32,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-26 21:26:32,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:32,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:32,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:32,318 INFO L175 Difference]: Start difference. First operand has 76 places, 111 transitions, 1499 flow. Second operand 3 states and 311 transitions. [2023-08-26 21:26:32,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 155 transitions, 2206 flow [2023-08-26 21:26:32,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 155 transitions, 2180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:32,492 INFO L231 Difference]: Finished difference. Result has 77 places, 111 transitions, 1532 flow [2023-08-26 21:26:32,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1532, PETRI_PLACES=77, PETRI_TRANSITIONS=111} [2023-08-26 21:26:32,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-08-26 21:26:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 111 transitions, 1532 flow [2023-08-26 21:26:32,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:32,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:32,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:32,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:26:32,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:32,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1323456565, now seen corresponding path program 1 times [2023-08-26 21:26:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320724013] [2023-08-26 21:26:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:32,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:32,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:32,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320724013] [2023-08-26 21:26:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320724013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:32,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:32,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:32,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771583486] [2023-08-26 21:26:32,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:32,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:32,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-26 21:26:32,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 111 transitions, 1532 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:32,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:32,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-26 21:26:32,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:33,339 INFO L124 PetriNetUnfolderBase]: 3462/5957 cut-off events. [2023-08-26 21:26:33,340 INFO L125 PetriNetUnfolderBase]: For 78391/81588 co-relation queries the response was YES. [2023-08-26 21:26:33,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32372 conditions, 5957 events. 3462/5957 cut-off events. For 78391/81588 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 43370 event pairs, 300 based on Foata normal form. 2684/8328 useless extension candidates. Maximal degree in co-relation 32333. Up to 2587 conditions per place. [2023-08-26 21:26:33,385 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 203 selfloop transitions, 19 changer transitions 4/248 dead transitions. [2023-08-26 21:26:33,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 248 transitions, 3841 flow [2023-08-26 21:26:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:26:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:26:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 685 transitions. [2023-08-26 21:26:33,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750346740638003 [2023-08-26 21:26:33,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 685 transitions. [2023-08-26 21:26:33,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 685 transitions. [2023-08-26 21:26:33,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:33,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 685 transitions. [2023-08-26 21:26:33,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:33,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:33,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:33,393 INFO L175 Difference]: Start difference. First operand has 77 places, 111 transitions, 1532 flow. Second operand 7 states and 685 transitions. [2023-08-26 21:26:33,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 248 transitions, 3841 flow [2023-08-26 21:26:33,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 248 transitions, 3789 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:33,538 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 1430 flow [2023-08-26 21:26:33,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1430, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2023-08-26 21:26:33,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-26 21:26:33,539 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 1430 flow [2023-08-26 21:26:33,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:33,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:33,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:26:33,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:33,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1488693593, now seen corresponding path program 1 times [2023-08-26 21:26:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:33,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53230102] [2023-08-26 21:26:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53230102] [2023-08-26 21:26:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53230102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:33,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:26:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377305586] [2023-08-26 21:26:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:26:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:26:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:26:33,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-26 21:26:33,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 1430 flow. Second operand has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:33,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:33,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-26 21:26:33,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:34,316 INFO L124 PetriNetUnfolderBase]: 3003/5336 cut-off events. [2023-08-26 21:26:34,316 INFO L125 PetriNetUnfolderBase]: For 69997/72082 co-relation queries the response was YES. [2023-08-26 21:26:34,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31489 conditions, 5336 events. 3003/5336 cut-off events. For 69997/72082 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 39950 event pairs, 161 based on Foata normal form. 1651/6658 useless extension candidates. Maximal degree in co-relation 31446. Up to 1669 conditions per place. [2023-08-26 21:26:34,356 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 213 selfloop transitions, 28 changer transitions 4/267 dead transitions. [2023-08-26 21:26:34,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 267 transitions, 4163 flow [2023-08-26 21:26:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:26:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:26:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 876 transitions. [2023-08-26 21:26:34,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47249190938511326 [2023-08-26 21:26:34,359 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 876 transitions. [2023-08-26 21:26:34,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 876 transitions. [2023-08-26 21:26:34,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:34,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 876 transitions. [2023-08-26 21:26:34,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.33333333333333) internal successors, (876), 9 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:34,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:34,364 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:34,364 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 1430 flow. Second operand 9 states and 876 transitions. [2023-08-26 21:26:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 267 transitions, 4163 flow [2023-08-26 21:26:34,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 267 transitions, 4129 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 21:26:34,670 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 1406 flow [2023-08-26 21:26:34,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1406, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2023-08-26 21:26:34,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-08-26 21:26:34,670 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 1406 flow [2023-08-26 21:26:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:34,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:34,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:34,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:26:34,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:34,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1174925261, now seen corresponding path program 1 times [2023-08-26 21:26:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692705459] [2023-08-26 21:26:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:34,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692705459] [2023-08-26 21:26:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692705459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:34,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:34,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:26:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742620300] [2023-08-26 21:26:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:26:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:26:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:26:34,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:34,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 1406 flow. Second operand has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:34,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:34,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:34,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:35,250 INFO L124 PetriNetUnfolderBase]: 2928/5020 cut-off events. [2023-08-26 21:26:35,250 INFO L125 PetriNetUnfolderBase]: For 53691/55304 co-relation queries the response was YES. [2023-08-26 21:26:35,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33031 conditions, 5020 events. 2928/5020 cut-off events. For 53691/55304 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 35743 event pairs, 150 based on Foata normal form. 875/5838 useless extension candidates. Maximal degree in co-relation 32985. Up to 1729 conditions per place. [2023-08-26 21:26:35,275 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 67 selfloop transitions, 17 changer transitions 82/173 dead transitions. [2023-08-26 21:26:35,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 173 transitions, 2730 flow [2023-08-26 21:26:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:26:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:26:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-08-26 21:26:35,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797734627831715 [2023-08-26 21:26:35,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-08-26 21:26:35,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-08-26 21:26:35,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:35,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-08-26 21:26:35,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,285 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 1406 flow. Second operand 6 states and 593 transitions. [2023-08-26 21:26:35,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 173 transitions, 2730 flow [2023-08-26 21:26:35,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 173 transitions, 2676 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-26 21:26:35,639 INFO L231 Difference]: Finished difference. Result has 87 places, 51 transitions, 613 flow [2023-08-26 21:26:35,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=87, PETRI_TRANSITIONS=51} [2023-08-26 21:26:35,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-08-26 21:26:35,640 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 51 transitions, 613 flow [2023-08-26 21:26:35,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:35,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:35,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 21:26:35,641 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:35,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash 229566124, now seen corresponding path program 1 times [2023-08-26 21:26:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311372381] [2023-08-26 21:26:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311372381] [2023-08-26 21:26:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311372381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:35,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:35,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126535558] [2023-08-26 21:26:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:35,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:35,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-26 21:26:35,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 51 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 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) [2023-08-26 21:26:35,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:35,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-26 21:26:35,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:35,866 INFO L124 PetriNetUnfolderBase]: 734/1322 cut-off events. [2023-08-26 21:26:35,867 INFO L125 PetriNetUnfolderBase]: For 12310/12353 co-relation queries the response was YES. [2023-08-26 21:26:35,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8595 conditions, 1322 events. 734/1322 cut-off events. For 12310/12353 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7190 event pairs, 116 based on Foata normal form. 7/1318 useless extension candidates. Maximal degree in co-relation 8549. Up to 753 conditions per place. [2023-08-26 21:26:35,872 INFO L140 encePairwiseOnDemand]: 201/206 looper letters, 49 selfloop transitions, 5 changer transitions 35/91 dead transitions. [2023-08-26 21:26:35,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 1171 flow [2023-08-26 21:26:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2023-08-26 21:26:35,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47815533980582525 [2023-08-26 21:26:35,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2023-08-26 21:26:35,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2023-08-26 21:26:35,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:35,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2023-08-26 21:26:35,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:35,876 INFO L175 Difference]: Start difference. First operand has 87 places, 51 transitions, 613 flow. Second operand 4 states and 394 transitions. [2023-08-26 21:26:35,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 1171 flow [2023-08-26 21:26:35,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 895 flow, removed 34 selfloop flow, removed 21 redundant places. [2023-08-26 21:26:35,902 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 326 flow [2023-08-26 21:26:35,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2023-08-26 21:26:35,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-26 21:26:35,903 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 326 flow [2023-08-26 21:26:35,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 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) [2023-08-26 21:26:35,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:35,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:35,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 21:26:35,903 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:35,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash 222567433, now seen corresponding path program 1 times [2023-08-26 21:26:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804369848] [2023-08-26 21:26:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804369848] [2023-08-26 21:26:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804369848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:36,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:36,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:26:36,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543365688] [2023-08-26 21:26:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:36,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:36,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:36,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-26 21:26:36,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:36,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-26 21:26:36,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:36,110 INFO L124 PetriNetUnfolderBase]: 233/441 cut-off events. [2023-08-26 21:26:36,110 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2023-08-26 21:26:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 441 events. 233/441 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1778 event pairs, 26 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2247. Up to 129 conditions per place. [2023-08-26 21:26:36,112 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 40 selfloop transitions, 10 changer transitions 51/101 dead transitions. [2023-08-26 21:26:36,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 900 flow [2023-08-26 21:26:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:26:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:26:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 553 transitions. [2023-08-26 21:26:36,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44741100323624594 [2023-08-26 21:26:36,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 553 transitions. [2023-08-26 21:26:36,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 553 transitions. [2023-08-26 21:26:36,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:36,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 553 transitions. [2023-08-26 21:26:36,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,119 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,119 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 326 flow. Second operand 6 states and 553 transitions. [2023-08-26 21:26:36,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 900 flow [2023-08-26 21:26:36,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 827 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-26 21:26:36,126 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 270 flow [2023-08-26 21:26:36,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2023-08-26 21:26:36,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-26 21:26:36,126 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 270 flow [2023-08-26 21:26:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:36,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:36,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 21:26:36,127 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:26:36,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash 679263463, now seen corresponding path program 2 times [2023-08-26 21:26:36,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:36,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593319954] [2023-08-26 21:26:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:36,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593319954] [2023-08-26 21:26:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593319954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:26:36,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067145997] [2023-08-26 21:26:36,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:36,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:26:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:26:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:26:36,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-26 21:26:36,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:36,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-26 21:26:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:36,336 INFO L124 PetriNetUnfolderBase]: 100/215 cut-off events. [2023-08-26 21:26:36,336 INFO L125 PetriNetUnfolderBase]: For 532/568 co-relation queries the response was YES. [2023-08-26 21:26:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 215 events. 100/215 cut-off events. For 532/568 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 817 event pairs, 6 based on Foata normal form. 16/226 useless extension candidates. Maximal degree in co-relation 976. Up to 64 conditions per place. [2023-08-26 21:26:36,337 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-26 21:26:36,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 540 flow [2023-08-26 21:26:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:26:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:26:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 737 transitions. [2023-08-26 21:26:36,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44720873786407767 [2023-08-26 21:26:36,341 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 737 transitions. [2023-08-26 21:26:36,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 737 transitions. [2023-08-26 21:26:36,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:36,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 737 transitions. [2023-08-26 21:26:36,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,346 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,346 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 270 flow. Second operand 8 states and 737 transitions. [2023-08-26 21:26:36,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 540 flow [2023-08-26 21:26:36,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 469 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 21:26:36,348 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-08-26 21:26:36,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-08-26 21:26:36,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-26 21:26:36,349 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-08-26 21:26:36,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:36,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-26 21:26:36,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-26 21:26:36,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-26 21:26:36,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (12 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2023-08-26 21:26:36,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-26 21:26:36,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-26 21:26:36,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-26 21:26:36,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-26 21:26:36,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 21:26:36,360 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:36,364 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:26:36,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:26:36,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:26:36 BasicIcfg [2023-08-26 21:26:36,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:26:36,368 INFO L158 Benchmark]: Toolchain (without parser) took 16927.75ms. Allocated memory was 373.3MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 348.3MB in the beginning and 368.7MB in the end (delta: -20.3MB). Peak memory consumption was 710.0MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,368 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:26:36,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.89ms. Allocated memory is still 373.3MB. Free memory was 348.3MB in the beginning and 328.0MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.63ms. Allocated memory is still 373.3MB. Free memory was 327.9MB in the beginning and 325.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,369 INFO L158 Benchmark]: Boogie Preprocessor took 45.50ms. Allocated memory is still 373.3MB. Free memory was 325.8MB in the beginning and 324.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,369 INFO L158 Benchmark]: RCFGBuilder took 418.85ms. Allocated memory is still 373.3MB. Free memory was 323.8MB in the beginning and 307.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,369 INFO L158 Benchmark]: TraceAbstraction took 15895.17ms. Allocated memory was 373.3MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 306.4MB in the beginning and 368.7MB in the end (delta: -62.3MB). Peak memory consumption was 668.0MB. Max. memory is 16.0GB. [2023-08-26 21:26:36,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 503.89ms. Allocated memory is still 373.3MB. Free memory was 348.3MB in the beginning and 328.0MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.63ms. Allocated memory is still 373.3MB. Free memory was 327.9MB in the beginning and 325.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.50ms. Allocated memory is still 373.3MB. Free memory was 325.8MB in the beginning and 324.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 418.85ms. Allocated memory is still 373.3MB. Free memory was 323.8MB in the beginning and 307.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 15895.17ms. Allocated memory was 373.3MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 306.4MB in the beginning and 368.7MB in the end (delta: -62.3MB). Peak memory consumption was 668.0MB. 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: 2.4s, 116 PlacesBefore, 42 PlacesAfterwards, 106 TransitionsBefore, 30 TransitionsAfterwards, 3358 CoEnabledTransitionPairs, 8 FixpointIterations, 19 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 10227 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4262, independent: 3993, independent conditional: 0, independent unconditional: 3993, dependent: 269, dependent conditional: 0, dependent unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1844, independent: 1807, independent conditional: 0, independent unconditional: 1807, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4262, independent: 2186, independent conditional: 0, independent unconditional: 2186, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 1844, unknown conditional: 0, unknown unconditional: 1844] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 732]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 732]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 744]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 744]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: 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 9 procedures, 146 locations, 21 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: 15.8s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 503 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1391 IncrementalHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 23 mSDtfsCounter, 1391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1532occurred in iteration=12, InterpolantAutomatonStates: 87, 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 21:26:36,397 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...