/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 14:51:16,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 14:51:16,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 14:51:16,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 14:51:16,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 14:51:16,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 14:51:16,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 14:51:16,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 14:51:16,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 14:51:16,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 14:51:16,308 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 14:51:16,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 14:51:16,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 14:51:16,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 14:51:16,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 14:51:16,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 14:51:16,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 14:51:16,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 14:51:16,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 14:51:16,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 14:51:16,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 14:51:16,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 14:51:16,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 14:51:16,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 14:51:16,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 14:51:16,313 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 14:51:16,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 14:51:16,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:51:16,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 14:51:16,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 14:51:16,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 14:51:16,315 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 14:51:16,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 14:51:16,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 14:51:16,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 14:51:16,316 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 14:51:16,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 14:51:16,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 14:51:16,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 14:51:16,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 14:51:16,615 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 14:51:16,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-27 14:51:17,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 14:51:18,003 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 14:51:18,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-27 14:51:18,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640bfe098/229034c56aa94adc936a04ab599f7781/FLAGb08772060 [2023-08-27 14:51:18,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640bfe098/229034c56aa94adc936a04ab599f7781 [2023-08-27 14:51:18,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 14:51:18,025 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 14:51:18,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 14:51:18,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 14:51:18,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 14:51:18,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be4fb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18, skipping insertion in model container [2023-08-27 14:51:18,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,065 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 14:51:18,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:51:18,284 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 14:51:18,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:51:18,342 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:51:18,342 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:51:18,349 INFO L206 MainTranslator]: Completed translation [2023-08-27 14:51:18,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18 WrapperNode [2023-08-27 14:51:18,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 14:51:18,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 14:51:18,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 14:51:18,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 14:51:18,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,427 INFO L138 Inliner]: procedures = 28, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 442 [2023-08-27 14:51:18,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 14:51:18,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 14:51:18,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 14:51:18,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 14:51:18,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 14:51:18,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 14:51:18,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 14:51:18,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 14:51:18,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (1/1) ... [2023-08-27 14:51:18,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:51:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:18,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 14:51:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 14:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 14:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 14:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 14:51:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 14:51:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 14:51:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 14:51:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 14:51:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 14:51:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 14:51:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 14:51:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 14:51:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 14:51:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 14:51:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 14:51:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 14:51:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 14:51:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 14:51:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 14:51:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 14:51:18,564 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 14:51:18,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 14:51:18,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 14:51:19,381 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 14:51:19,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 14:51:19,641 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-27 14:51:19,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:51:19 BoogieIcfgContainer [2023-08-27 14:51:19,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 14:51:19,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 14:51:19,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 14:51:19,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 14:51:19,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:51:18" (1/3) ... [2023-08-27 14:51:19,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce63eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:51:19, skipping insertion in model container [2023-08-27 14:51:19,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:51:18" (2/3) ... [2023-08-27 14:51:19,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce63eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:51:19, skipping insertion in model container [2023-08-27 14:51:19,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:51:19" (3/3) ... [2023-08-27 14:51:19,652 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-08-27 14:51:19,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 14:51:19,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-08-27 14:51:19,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 14:51:19,776 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 14:51:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 430 transitions, 884 flow [2023-08-27 14:51:20,001 INFO L124 PetriNetUnfolderBase]: 37/427 cut-off events. [2023-08-27 14:51:20,002 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 14:51:20,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 427 events. 37/427 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 597 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2023-08-27 14:51:20,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 430 transitions, 884 flow [2023-08-27 14:51:20,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 416 transitions, 850 flow [2023-08-27 14:51:20,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 14:51:20,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 416 transitions, 850 flow [2023-08-27 14:51:20,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 416 transitions, 850 flow [2023-08-27 14:51:20,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 416 transitions, 850 flow [2023-08-27 14:51:20,104 INFO L124 PetriNetUnfolderBase]: 37/416 cut-off events. [2023-08-27 14:51:20,104 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 14:51:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 416 events. 37/416 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 567 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2023-08-27 14:51:20,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 6514 [2023-08-27 14:51:35,640 INFO L134 LiptonReduction]: Checked pairs total: 8560 [2023-08-27 14:51:35,641 INFO L136 LiptonReduction]: Total number of compositions: 484 [2023-08-27 14:51:35,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 14:51:35,658 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;@7437bf70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 14:51:35,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-27 14:51:35,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 14:51:35,661 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 14:51:35,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 14:51:35,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:35,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 14:51:35,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:35,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash 60210, now seen corresponding path program 1 times [2023-08-27 14:51:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542033305] [2023-08-27 14:51:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:36,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542033305] [2023-08-27 14:51:36,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542033305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:36,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:36,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:51:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764262934] [2023-08-27 14:51:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:36,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:36,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:51:36,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:36,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:51:36,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:36,337 INFO L124 PetriNetUnfolderBase]: 588/900 cut-off events. [2023-08-27 14:51:36,337 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 14:51:36,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 900 events. 588/900 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4061 event pairs, 445 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1678. Up to 881 conditions per place. [2023-08-27 14:51:36,347 INFO L140 encePairwiseOnDemand]: 888/914 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2023-08-27 14:51:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 266 flow [2023-08-27 14:51:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1125 transitions. [2023-08-27 14:51:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102844638949672 [2023-08-27 14:51:36,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1125 transitions. [2023-08-27 14:51:36,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1125 transitions. [2023-08-27 14:51:36,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:36,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1125 transitions. [2023-08-27 14:51:36,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,392 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 136 flow. Second operand 3 states and 1125 transitions. [2023-08-27 14:51:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 266 flow [2023-08-27 14:51:36,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 254 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 14:51:36,401 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 216 flow [2023-08-27 14:51:36,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=52, PETRI_TRANSITIONS=63} [2023-08-27 14:51:36,406 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -8 predicate places. [2023-08-27 14:51:36,407 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 216 flow [2023-08-27 14:51:36,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:36,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 14:51:36,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 14:51:36,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:36,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1869247, now seen corresponding path program 1 times [2023-08-27 14:51:36,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091919251] [2023-08-27 14:51:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:36,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091919251] [2023-08-27 14:51:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091919251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062444006] [2023-08-27 14:51:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:36,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:36,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:36,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:36,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 14:51:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:36,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:36,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:36,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:36,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062444006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:36,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:36,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 14:51:36,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847823013] [2023-08-27 14:51:36,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:51:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:36,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:51:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:51:36,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:51:36,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 351.14285714285717) internal successors, (2458), 7 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:36,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:51:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:37,102 INFO L124 PetriNetUnfolderBase]: 618/942 cut-off events. [2023-08-27 14:51:37,102 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 14:51:37,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 942 events. 618/942 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4217 event pairs, 445 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 1775. Up to 889 conditions per place. [2023-08-27 14:51:37,108 INFO L140 encePairwiseOnDemand]: 894/914 looper letters, 45 selfloop transitions, 58 changer transitions 0/105 dead transitions. [2023-08-27 14:51:37,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 105 transitions, 602 flow [2023-08-27 14:51:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:51:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:51:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2565 transitions. [2023-08-27 14:51:37,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40090653329165366 [2023-08-27 14:51:37,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2565 transitions. [2023-08-27 14:51:37,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2565 transitions. [2023-08-27 14:51:37,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:37,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2565 transitions. [2023-08-27 14:51:37,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 366.42857142857144) internal successors, (2565), 7 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,136 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 216 flow. Second operand 7 states and 2565 transitions. [2023-08-27 14:51:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 105 transitions, 602 flow [2023-08-27 14:51:37,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:37,140 INFO L231 Difference]: Finished difference. Result has 59 places, 105 transitions, 570 flow [2023-08-27 14:51:37,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=570, PETRI_PLACES=59, PETRI_TRANSITIONS=105} [2023-08-27 14:51:37,141 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-08-27 14:51:37,141 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 105 transitions, 570 flow [2023-08-27 14:51:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 351.14285714285717) internal successors, (2458), 7 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:37,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 14:51:37,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:37,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:37,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:37,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash 57948370, now seen corresponding path program 1 times [2023-08-27 14:51:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:37,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093188334] [2023-08-27 14:51:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093188334] [2023-08-27 14:51:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093188334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:51:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482922303] [2023-08-27 14:51:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:37,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:51:37,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 105 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:37,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:51:37,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:37,592 INFO L124 PetriNetUnfolderBase]: 606/926 cut-off events. [2023-08-27 14:51:37,593 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 14:51:37,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 926 events. 606/926 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4167 event pairs, 445 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 1901. Up to 877 conditions per place. [2023-08-27 14:51:37,598 INFO L140 encePairwiseOnDemand]: 904/914 looper letters, 65 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2023-08-27 14:51:37,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 636 flow [2023-08-27 14:51:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1101 transitions. [2023-08-27 14:51:37,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40153172866520787 [2023-08-27 14:51:37,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1101 transitions. [2023-08-27 14:51:37,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1101 transitions. [2023-08-27 14:51:37,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:37,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1101 transitions. [2023-08-27 14:51:37,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.0) internal successors, (1101), 3 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,611 INFO L175 Difference]: Start difference. First operand has 59 places, 105 transitions, 570 flow. Second operand 3 states and 1101 transitions. [2023-08-27 14:51:37,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 636 flow [2023-08-27 14:51:37,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 570 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:37,615 INFO L231 Difference]: Finished difference. Result has 55 places, 89 transitions, 440 flow [2023-08-27 14:51:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=55, PETRI_TRANSITIONS=89} [2023-08-27 14:51:37,615 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2023-08-27 14:51:37,616 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 89 transitions, 440 flow [2023-08-27 14:51:37,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:37,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 14:51:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 14:51:37,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:37,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1798584910, now seen corresponding path program 1 times [2023-08-27 14:51:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830895119] [2023-08-27 14:51:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830895119] [2023-08-27 14:51:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830895119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:51:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78595822] [2023-08-27 14:51:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:37,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:51:37,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 89 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:37,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:51:37,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:37,894 INFO L124 PetriNetUnfolderBase]: 607/928 cut-off events. [2023-08-27 14:51:37,895 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 14:51:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 928 events. 607/928 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4168 event pairs, 445 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1901. Up to 910 conditions per place. [2023-08-27 14:51:37,900 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 82 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2023-08-27 14:51:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 622 flow [2023-08-27 14:51:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1173 transitions. [2023-08-27 14:51:37,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42778993435448576 [2023-08-27 14:51:37,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1173 transitions. [2023-08-27 14:51:37,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1173 transitions. [2023-08-27 14:51:37,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:37,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1173 transitions. [2023-08-27 14:51:37,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 391.0) internal successors, (1173), 3 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,914 INFO L175 Difference]: Start difference. First operand has 55 places, 89 transitions, 440 flow. Second operand 3 states and 1173 transitions. [2023-08-27 14:51:37,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 622 flow [2023-08-27 14:51:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 578 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:37,918 INFO L231 Difference]: Finished difference. Result has 56 places, 91 transitions, 429 flow [2023-08-27 14:51:37,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=56, PETRI_TRANSITIONS=91} [2023-08-27 14:51:37,920 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2023-08-27 14:51:37,920 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 91 transitions, 429 flow [2023-08-27 14:51:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:37,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 14:51:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 14:51:37,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:37,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash -78437118, now seen corresponding path program 1 times [2023-08-27 14:51:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396723443] [2023-08-27 14:51:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:38,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396723443] [2023-08-27 14:51:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396723443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149486212] [2023-08-27 14:51:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:38,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:38,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:38,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 14:51:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:38,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 14:51:38,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:38,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:38,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149486212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:38,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:38,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-08-27 14:51:38,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463139496] [2023-08-27 14:51:38,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:38,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 14:51:38,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:38,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 14:51:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 14:51:38,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 914 [2023-08-27 14:51:38,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 91 transitions, 429 flow. Second operand has 5 states, 5 states have (on average 318.2) internal successors, (1591), 5 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:38,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 914 [2023-08-27 14:51:38,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:38,622 INFO L124 PetriNetUnfolderBase]: 1109/1736 cut-off events. [2023-08-27 14:51:38,622 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-27 14:51:38,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 1736 events. 1109/1736 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9397 event pairs, 890 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 3555. Up to 909 conditions per place. [2023-08-27 14:51:38,633 INFO L140 encePairwiseOnDemand]: 901/914 looper letters, 130 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-08-27 14:51:38,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 151 transitions, 992 flow [2023-08-27 14:51:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 14:51:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 14:51:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1995 transitions. [2023-08-27 14:51:38,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637855579868709 [2023-08-27 14:51:38,639 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1995 transitions. [2023-08-27 14:51:38,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1995 transitions. [2023-08-27 14:51:38,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:38,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1995 transitions. [2023-08-27 14:51:38,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,660 INFO L175 Difference]: Start difference. First operand has 56 places, 91 transitions, 429 flow. Second operand 6 states and 1995 transitions. [2023-08-27 14:51:38,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 151 transitions, 992 flow [2023-08-27 14:51:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 151 transitions, 977 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:38,666 INFO L231 Difference]: Finished difference. Result has 63 places, 103 transitions, 583 flow [2023-08-27 14:51:38,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=63, PETRI_TRANSITIONS=103} [2023-08-27 14:51:38,669 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-27 14:51:38,669 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 103 transitions, 583 flow [2023-08-27 14:51:38,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.2) internal successors, (1591), 5 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:38,670 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 14:51:38,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:38,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:38,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:38,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash -146104686, now seen corresponding path program 2 times [2023-08-27 14:51:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:38,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75640037] [2023-08-27 14:51:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:38,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:39,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75640037] [2023-08-27 14:51:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75640037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434776169] [2023-08-27 14:51:39,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:51:39,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:39,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:39,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:39,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 14:51:39,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:51:39,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:39,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:51:39,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 14:51:39,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434776169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:39,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:39,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 14:51:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605613496] [2023-08-27 14:51:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:39,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:39,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 14:51:39,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 914 [2023-08-27 14:51:39,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 103 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:39,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 914 [2023-08-27 14:51:39,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:39,425 INFO L124 PetriNetUnfolderBase]: 1109/1735 cut-off events. [2023-08-27 14:51:39,425 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 14:51:39,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 1735 events. 1109/1735 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9471 event pairs, 890 based on Foata normal form. 1/1060 useless extension candidates. Maximal degree in co-relation 3679. Up to 1702 conditions per place. [2023-08-27 14:51:39,436 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 94 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2023-08-27 14:51:39,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 773 flow [2023-08-27 14:51:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1109 transitions. [2023-08-27 14:51:39,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40444930707512766 [2023-08-27 14:51:39,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1109 transitions. [2023-08-27 14:51:39,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1109 transitions. [2023-08-27 14:51:39,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:39,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1109 transitions. [2023-08-27 14:51:39,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,448 INFO L175 Difference]: Start difference. First operand has 63 places, 103 transitions, 583 flow. Second operand 3 states and 1109 transitions. [2023-08-27 14:51:39,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 773 flow [2023-08-27 14:51:39,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 763 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:39,452 INFO L231 Difference]: Finished difference. Result has 63 places, 102 transitions, 575 flow [2023-08-27 14:51:39,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=575, PETRI_PLACES=63, PETRI_TRANSITIONS=102} [2023-08-27 14:51:39,453 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-27 14:51:39,453 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 102 transitions, 575 flow [2023-08-27 14:51:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:39,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:39,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:39,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:39,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:39,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1932021746, now seen corresponding path program 1 times [2023-08-27 14:51:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443042910] [2023-08-27 14:51:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:39,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443042910] [2023-08-27 14:51:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443042910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:39,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:51:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693220723] [2023-08-27 14:51:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:39,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:51:39,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 102 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:39,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:39,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:51:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:40,020 INFO L124 PetriNetUnfolderBase]: 1121/1761 cut-off events. [2023-08-27 14:51:40,020 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-08-27 14:51:40,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3997 conditions, 1761 events. 1121/1761 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9650 event pairs, 890 based on Foata normal form. 0/1081 useless extension candidates. Maximal degree in co-relation 3933. Up to 1717 conditions per place. [2023-08-27 14:51:40,031 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 106 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2023-08-27 14:51:40,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 913 flow [2023-08-27 14:51:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1175 transitions. [2023-08-27 14:51:40,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285193289569657 [2023-08-27 14:51:40,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1175 transitions. [2023-08-27 14:51:40,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1175 transitions. [2023-08-27 14:51:40,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:40,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1175 transitions. [2023-08-27 14:51:40,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,044 INFO L175 Difference]: Start difference. First operand has 63 places, 102 transitions, 575 flow. Second operand 3 states and 1175 transitions. [2023-08-27 14:51:40,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 913 flow [2023-08-27 14:51:40,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 118 transitions, 901 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:40,048 INFO L231 Difference]: Finished difference. Result has 64 places, 109 transitions, 670 flow [2023-08-27 14:51:40,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=670, PETRI_PLACES=64, PETRI_TRANSITIONS=109} [2023-08-27 14:51:40,049 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2023-08-27 14:51:40,049 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 109 transitions, 670 flow [2023-08-27 14:51:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:40,050 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 14:51:40,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 14:51:40,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:40,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1819388203, now seen corresponding path program 1 times [2023-08-27 14:51:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:40,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361578887] [2023-08-27 14:51:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:40,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:40,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361578887] [2023-08-27 14:51:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361578887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515242749] [2023-08-27 14:51:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:40,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:40,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:40,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 14:51:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:40,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 14:51:40,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:40,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515242749] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:40,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:40,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 14:51:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099162003] [2023-08-27 14:51:40,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:40,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 14:51:40,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 14:51:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 14:51:40,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:51:40,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 109 transitions, 670 flow. Second operand has 13 states, 13 states have (on average 351.15384615384613) internal successors, (4565), 13 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:40,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:51:40,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:40,773 INFO L124 PetriNetUnfolderBase]: 1193/1881 cut-off events. [2023-08-27 14:51:40,774 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-08-27 14:51:40,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 1881 events. 1193/1881 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10245 event pairs, 890 based on Foata normal form. 42/1215 useless extension candidates. Maximal degree in co-relation 3774. Up to 1755 conditions per place. [2023-08-27 14:51:40,786 INFO L140 encePairwiseOnDemand]: 899/914 looper letters, 50 selfloop transitions, 129 changer transitions 0/181 dead transitions. [2023-08-27 14:51:40,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 181 transitions, 1568 flow [2023-08-27 14:51:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 14:51:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 14:51:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4364 transitions. [2023-08-27 14:51:40,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978847556528082 [2023-08-27 14:51:40,798 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4364 transitions. [2023-08-27 14:51:40,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4364 transitions. [2023-08-27 14:51:40,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:40,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4364 transitions. [2023-08-27 14:51:40,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 363.6666666666667) internal successors, (4364), 12 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 914.0) internal successors, (11882), 13 states have internal predecessors, (11882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 914.0) internal successors, (11882), 13 states have internal predecessors, (11882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,825 INFO L175 Difference]: Start difference. First operand has 64 places, 109 transitions, 670 flow. Second operand 12 states and 4364 transitions. [2023-08-27 14:51:40,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 181 transitions, 1568 flow [2023-08-27 14:51:40,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 181 transitions, 1552 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:40,833 INFO L231 Difference]: Finished difference. Result has 80 places, 181 transitions, 1604 flow [2023-08-27 14:51:40,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1604, PETRI_PLACES=80, PETRI_TRANSITIONS=181} [2023-08-27 14:51:40,835 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 20 predicate places. [2023-08-27 14:51:40,835 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 181 transitions, 1604 flow [2023-08-27 14:51:40,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 351.15384615384613) internal successors, (4565), 13 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:40,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:40,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:40,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:41,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:41,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1820808594, now seen corresponding path program 1 times [2023-08-27 14:51:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022120232] [2023-08-27 14:51:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:41,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:41,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022120232] [2023-08-27 14:51:41,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022120232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:41,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644854193] [2023-08-27 14:51:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:41,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:41,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:41,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 14:51:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:41,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 14:51:41,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:41,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644854193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:41,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-08-27 14:51:41,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173836778] [2023-08-27 14:51:41,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:41,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 14:51:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 14:51:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-27 14:51:41,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 914 [2023-08-27 14:51:41,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 181 transitions, 1604 flow. Second operand has 13 states, 13 states have (on average 318.46153846153845) internal successors, (4140), 13 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:41,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 914 [2023-08-27 14:51:41,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:42,131 INFO L124 PetriNetUnfolderBase]: 1826/2848 cut-off events. [2023-08-27 14:51:42,131 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2023-08-27 14:51:42,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7480 conditions, 2848 events. 1826/2848 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 16270 event pairs, 1335 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 6931. Up to 1782 conditions per place. [2023-08-27 14:51:42,152 INFO L140 encePairwiseOnDemand]: 902/914 looper letters, 232 selfloop transitions, 63 changer transitions 0/297 dead transitions. [2023-08-27 14:51:42,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 297 transitions, 3157 flow [2023-08-27 14:51:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 14:51:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 14:51:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4224 transitions. [2023-08-27 14:51:42,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3554957077933008 [2023-08-27 14:51:42,163 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4224 transitions. [2023-08-27 14:51:42,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4224 transitions. [2023-08-27 14:51:42,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:42,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4224 transitions. [2023-08-27 14:51:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 324.9230769230769) internal successors, (4224), 13 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:42,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 914.0) internal successors, (12796), 14 states have internal predecessors, (12796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:42,191 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 914.0) internal successors, (12796), 14 states have internal predecessors, (12796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:42,191 INFO L175 Difference]: Start difference. First operand has 80 places, 181 transitions, 1604 flow. Second operand 13 states and 4224 transitions. [2023-08-27 14:51:42,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 297 transitions, 3157 flow [2023-08-27 14:51:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 297 transitions, 2517 flow, removed 221 selfloop flow, removed 5 redundant places. [2023-08-27 14:51:42,204 INFO L231 Difference]: Finished difference. Result has 91 places, 202 transitions, 1583 flow [2023-08-27 14:51:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1583, PETRI_PLACES=91, PETRI_TRANSITIONS=202} [2023-08-27 14:51:42,205 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2023-08-27 14:51:42,205 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 202 transitions, 1583 flow [2023-08-27 14:51:42,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 318.46153846153845) internal successors, (4140), 13 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:42,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:42,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:42,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:42,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:42,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1931907552, now seen corresponding path program 1 times [2023-08-27 14:51:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:42,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333838261] [2023-08-27 14:51:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333838261] [2023-08-27 14:51:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333838261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:42,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:42,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:51:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996242946] [2023-08-27 14:51:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:42,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 914 [2023-08-27 14:51:42,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 202 transitions, 1583 flow. Second operand has 3 states, 3 states have (on average 380.6666666666667) internal successors, (1142), 3 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:42,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:42,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 914 [2023-08-27 14:51:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:43,089 INFO L124 PetriNetUnfolderBase]: 2799/4250 cut-off events. [2023-08-27 14:51:43,089 INFO L125 PetriNetUnfolderBase]: For 922/922 co-relation queries the response was YES. [2023-08-27 14:51:43,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 4250 events. 2799/4250 cut-off events. For 922/922 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21971 event pairs, 789 based on Foata normal form. 0/2964 useless extension candidates. Maximal degree in co-relation 10096. Up to 3173 conditions per place. [2023-08-27 14:51:43,122 INFO L140 encePairwiseOnDemand]: 907/914 looper letters, 219 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2023-08-27 14:51:43,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 221 transitions, 2070 flow [2023-08-27 14:51:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1206 transitions. [2023-08-27 14:51:43,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43982494529540483 [2023-08-27 14:51:43,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1206 transitions. [2023-08-27 14:51:43,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1206 transitions. [2023-08-27 14:51:43,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:43,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1206 transitions. [2023-08-27 14:51:43,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,133 INFO L175 Difference]: Start difference. First operand has 91 places, 202 transitions, 1583 flow. Second operand 3 states and 1206 transitions. [2023-08-27 14:51:43,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 221 transitions, 2070 flow [2023-08-27 14:51:43,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 221 transitions, 2006 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:43,150 INFO L231 Difference]: Finished difference. Result has 92 places, 203 transitions, 1539 flow [2023-08-27 14:51:43,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1539, PETRI_PLACES=92, PETRI_TRANSITIONS=203} [2023-08-27 14:51:43,152 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2023-08-27 14:51:43,152 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 203 transitions, 1539 flow [2023-08-27 14:51:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 380.6666666666667) internal successors, (1142), 3 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:43,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 14:51:43,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:43,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 567881634, now seen corresponding path program 1 times [2023-08-27 14:51:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981265996] [2023-08-27 14:51:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 14:51:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981265996] [2023-08-27 14:51:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981265996] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082165958] [2023-08-27 14:51:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:43,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:43,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:43,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 14:51:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:43,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:43,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 14:51:43,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082165958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:43,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 14:51:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10595851] [2023-08-27 14:51:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:43,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 14:51:43,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:51:43,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 203 transitions, 1539 flow. Second operand has 4 states, 4 states have (on average 375.75) internal successors, (1503), 4 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:43,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:51:43,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:43,900 INFO L124 PetriNetUnfolderBase]: 2124/3352 cut-off events. [2023-08-27 14:51:43,901 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2023-08-27 14:51:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9018 conditions, 3352 events. 2124/3352 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 19840 event pairs, 1605 based on Foata normal form. 2/2476 useless extension candidates. Maximal degree in co-relation 8975. Up to 3291 conditions per place. [2023-08-27 14:51:43,922 INFO L140 encePairwiseOnDemand]: 910/914 looper letters, 157 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2023-08-27 14:51:43,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 201 transitions, 1921 flow [2023-08-27 14:51:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:51:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:51:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1544 transitions. [2023-08-27 14:51:43,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223194748358862 [2023-08-27 14:51:43,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1544 transitions. [2023-08-27 14:51:43,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1544 transitions. [2023-08-27 14:51:43,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:43,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1544 transitions. [2023-08-27 14:51:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,935 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,935 INFO L175 Difference]: Start difference. First operand has 92 places, 203 transitions, 1539 flow. Second operand 4 states and 1544 transitions. [2023-08-27 14:51:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 201 transitions, 1921 flow [2023-08-27 14:51:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 201 transitions, 1913 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:43,947 INFO L231 Difference]: Finished difference. Result has 93 places, 201 transitions, 1599 flow [2023-08-27 14:51:43,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1599, PETRI_PLACES=93, PETRI_TRANSITIONS=201} [2023-08-27 14:51:43,947 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 33 predicate places. [2023-08-27 14:51:43,947 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 201 transitions, 1599 flow [2023-08-27 14:51:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 375.75) internal successors, (1503), 4 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:43,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:43,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:43,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:44,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:44,153 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:44,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1931907547, now seen corresponding path program 1 times [2023-08-27 14:51:44,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:44,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545587354] [2023-08-27 14:51:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:44,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:44,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545587354] [2023-08-27 14:51:44,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545587354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:44,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:44,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:51:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740323256] [2023-08-27 14:51:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:44,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:44,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 914 [2023-08-27 14:51:44,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 201 transitions, 1599 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:44,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 914 [2023-08-27 14:51:44,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:44,788 INFO L124 PetriNetUnfolderBase]: 2690/4080 cut-off events. [2023-08-27 14:51:44,788 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2023-08-27 14:51:44,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10635 conditions, 4080 events. 2690/4080 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21187 event pairs, 693 based on Foata normal form. 0/3184 useless extension candidates. Maximal degree in co-relation 10590. Up to 3173 conditions per place. [2023-08-27 14:51:44,815 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 216 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-08-27 14:51:44,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 218 transitions, 2076 flow [2023-08-27 14:51:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1194 transitions. [2023-08-27 14:51:44,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43544857768052514 [2023-08-27 14:51:44,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1194 transitions. [2023-08-27 14:51:44,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1194 transitions. [2023-08-27 14:51:44,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:44,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1194 transitions. [2023-08-27 14:51:44,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,825 INFO L175 Difference]: Start difference. First operand has 93 places, 201 transitions, 1599 flow. Second operand 3 states and 1194 transitions. [2023-08-27 14:51:44,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 218 transitions, 2076 flow [2023-08-27 14:51:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 218 transitions, 1997 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:44,839 INFO L231 Difference]: Finished difference. Result has 94 places, 201 transitions, 1528 flow [2023-08-27 14:51:44,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1528, PETRI_PLACES=94, PETRI_TRANSITIONS=201} [2023-08-27 14:51:44,840 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 34 predicate places. [2023-08-27 14:51:44,840 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 201 transitions, 1528 flow [2023-08-27 14:51:44,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:44,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:44,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 14:51:44,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:44,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1931907546, now seen corresponding path program 1 times [2023-08-27 14:51:44,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:44,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513833346] [2023-08-27 14:51:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513833346] [2023-08-27 14:51:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513833346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:44,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:44,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:51:44,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051996030] [2023-08-27 14:51:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:44,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 914 [2023-08-27 14:51:44,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 201 transitions, 1528 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:44,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 914 [2023-08-27 14:51:44,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:45,488 INFO L124 PetriNetUnfolderBase]: 2582/3912 cut-off events. [2023-08-27 14:51:45,489 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2023-08-27 14:51:45,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10471 conditions, 3912 events. 2582/3912 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20114 event pairs, 597 based on Foata normal form. 0/3190 useless extension candidates. Maximal degree in co-relation 10426. Up to 3173 conditions per place. [2023-08-27 14:51:45,516 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 215 selfloop transitions, 2 changer transitions 0/217 dead transitions. [2023-08-27 14:51:45,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 217 transitions, 2001 flow [2023-08-27 14:51:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1193 transitions. [2023-08-27 14:51:45,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350838803792852 [2023-08-27 14:51:45,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1193 transitions. [2023-08-27 14:51:45,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1193 transitions. [2023-08-27 14:51:45,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:45,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1193 transitions. [2023-08-27 14:51:45,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,525 INFO L175 Difference]: Start difference. First operand has 94 places, 201 transitions, 1528 flow. Second operand 3 states and 1193 transitions. [2023-08-27 14:51:45,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 217 transitions, 2001 flow [2023-08-27 14:51:45,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 217 transitions, 1997 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:45,536 INFO L231 Difference]: Finished difference. Result has 95 places, 201 transitions, 1532 flow [2023-08-27 14:51:45,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1532, PETRI_PLACES=95, PETRI_TRANSITIONS=201} [2023-08-27 14:51:45,538 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2023-08-27 14:51:45,538 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 201 transitions, 1532 flow [2023-08-27 14:51:45,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:45,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 14:51:45,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 14:51:45,538 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:45,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 424467049, now seen corresponding path program 2 times [2023-08-27 14:51:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413083790] [2023-08-27 14:51:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 14:51:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413083790] [2023-08-27 14:51:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413083790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733147573] [2023-08-27 14:51:45,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:51:45,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:45,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:45,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 14:51:45,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:51:45,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:45,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:51:45,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 14:51:45,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733147573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-27 14:51:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289088716] [2023-08-27 14:51:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:51:45,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 914 [2023-08-27 14:51:45,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 201 transitions, 1532 flow. Second operand has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:45,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 914 [2023-08-27 14:51:45,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:46,283 INFO L124 PetriNetUnfolderBase]: 1988/3125 cut-off events. [2023-08-27 14:51:46,283 INFO L125 PetriNetUnfolderBase]: For 1258/1258 co-relation queries the response was YES. [2023-08-27 14:51:46,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 3125 events. 1988/3125 cut-off events. For 1258/1258 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 18307 event pairs, 1485 based on Foata normal form. 0/2530 useless extension candidates. Maximal degree in co-relation 8770. Up to 3025 conditions per place. [2023-08-27 14:51:46,306 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 164 selfloop transitions, 34 changer transitions 0/200 dead transitions. [2023-08-27 14:51:46,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 200 transitions, 1920 flow [2023-08-27 14:51:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:51:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:51:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1525 transitions. [2023-08-27 14:51:46,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171225382932166 [2023-08-27 14:51:46,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1525 transitions. [2023-08-27 14:51:46,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1525 transitions. [2023-08-27 14:51:46,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:46,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1525 transitions. [2023-08-27 14:51:46,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,317 INFO L175 Difference]: Start difference. First operand has 95 places, 201 transitions, 1532 flow. Second operand 4 states and 1525 transitions. [2023-08-27 14:51:46,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 200 transitions, 1920 flow [2023-08-27 14:51:46,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 200 transitions, 1916 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:46,328 INFO L231 Difference]: Finished difference. Result has 95 places, 200 transitions, 1588 flow [2023-08-27 14:51:46,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1588, PETRI_PLACES=95, PETRI_TRANSITIONS=200} [2023-08-27 14:51:46,329 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2023-08-27 14:51:46,329 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 200 transitions, 1588 flow [2023-08-27 14:51:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:46,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:46,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:46,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:46,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1247267673, now seen corresponding path program 1 times [2023-08-27 14:51:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626152587] [2023-08-27 14:51:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626152587] [2023-08-27 14:51:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626152587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688524288] [2023-08-27 14:51:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:46,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:46,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:46,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:46,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 14:51:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:46,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 14:51:46,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688524288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:46,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-27 14:51:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921632881] [2023-08-27 14:51:46,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 14:51:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 14:51:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-27 14:51:46,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 914 [2023-08-27 14:51:46,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 200 transitions, 1588 flow. Second operand has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:46,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 914 [2023-08-27 14:51:46,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:47,727 INFO L124 PetriNetUnfolderBase]: 2648/4310 cut-off events. [2023-08-27 14:51:47,727 INFO L125 PetriNetUnfolderBase]: For 1614/1614 co-relation queries the response was YES. [2023-08-27 14:51:47,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11647 conditions, 4310 events. 2648/4310 cut-off events. For 1614/1614 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 27810 event pairs, 2106 based on Foata normal form. 263/3894 useless extension candidates. Maximal degree in co-relation 11606. Up to 3080 conditions per place. [2023-08-27 14:51:47,749 INFO L140 encePairwiseOnDemand]: 902/914 looper letters, 205 selfloop transitions, 25 changer transitions 0/232 dead transitions. [2023-08-27 14:51:47,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 232 transitions, 2194 flow [2023-08-27 14:51:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 14:51:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 14:51:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2060 transitions. [2023-08-27 14:51:47,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37563822027717 [2023-08-27 14:51:47,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2060 transitions. [2023-08-27 14:51:47,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2060 transitions. [2023-08-27 14:51:47,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:47,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2060 transitions. [2023-08-27 14:51:47,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.3333333333333) internal successors, (2060), 6 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) [2023-08-27 14:51:47,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:47,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:47,765 INFO L175 Difference]: Start difference. First operand has 95 places, 200 transitions, 1588 flow. Second operand 6 states and 2060 transitions. [2023-08-27 14:51:47,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 232 transitions, 2194 flow [2023-08-27 14:51:47,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 232 transitions, 2159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:47,777 INFO L231 Difference]: Finished difference. Result has 99 places, 208 transitions, 1703 flow [2023-08-27 14:51:47,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1703, PETRI_PLACES=99, PETRI_TRANSITIONS=208} [2023-08-27 14:51:47,778 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 39 predicate places. [2023-08-27 14:51:47,778 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 208 transitions, 1703 flow [2023-08-27 14:51:47,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:47,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:47,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:47,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 14:51:47,984 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:47,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1247082602, now seen corresponding path program 1 times [2023-08-27 14:51:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825292562] [2023-08-27 14:51:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:47,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825292562] [2023-08-27 14:51:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825292562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104877753] [2023-08-27 14:51:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:48,052 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:48,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 14:51:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:48,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:48,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:48,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104877753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:48,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 14:51:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393123940] [2023-08-27 14:51:48,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:48,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:51:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:51:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:51:48,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:51:48,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 208 transitions, 1703 flow. Second operand has 7 states, 7 states have (on average 376.85714285714283) internal successors, (2638), 7 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:48,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:48,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:51:48,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:48,870 INFO L124 PetriNetUnfolderBase]: 2873/4670 cut-off events. [2023-08-27 14:51:48,870 INFO L125 PetriNetUnfolderBase]: For 2653/2653 co-relation queries the response was YES. [2023-08-27 14:51:48,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14245 conditions, 4670 events. 2873/4670 cut-off events. For 2653/2653 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 29857 event pairs, 2106 based on Foata normal form. 0/3871 useless extension candidates. Maximal degree in co-relation 14203. Up to 4229 conditions per place. [2023-08-27 14:51:48,897 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 242 selfloop transitions, 121 changer transitions 0/365 dead transitions. [2023-08-27 14:51:48,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 365 transitions, 3861 flow [2023-08-27 14:51:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:51:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:51:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2688 transitions. [2023-08-27 14:51:48,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201312910284464 [2023-08-27 14:51:48,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2688 transitions. [2023-08-27 14:51:48,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2688 transitions. [2023-08-27 14:51:48,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:48,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2688 transitions. [2023-08-27 14:51:48,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:48,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:48,913 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:48,913 INFO L175 Difference]: Start difference. First operand has 99 places, 208 transitions, 1703 flow. Second operand 7 states and 2688 transitions. [2023-08-27 14:51:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 365 transitions, 3861 flow [2023-08-27 14:51:48,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 365 transitions, 3805 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-27 14:51:48,933 INFO L231 Difference]: Finished difference. Result has 108 places, 295 transitions, 2896 flow [2023-08-27 14:51:48,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2896, PETRI_PLACES=108, PETRI_TRANSITIONS=295} [2023-08-27 14:51:48,934 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 48 predicate places. [2023-08-27 14:51:48,934 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 295 transitions, 2896 flow [2023-08-27 14:51:48,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 376.85714285714283) internal successors, (2638), 7 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:48,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:48,935 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:48,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:49,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 14:51:49,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:49,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:49,141 INFO L85 PathProgramCache]: Analyzing trace with hash -236860274, now seen corresponding path program 1 times [2023-08-27 14:51:49,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:49,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260917015] [2023-08-27 14:51:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:49,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:49,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:49,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260917015] [2023-08-27 14:51:49,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260917015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:49,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425527595] [2023-08-27 14:51:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:49,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:49,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:49,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:49,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 14:51:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:49,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:49,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:49,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425527595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:49,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:49,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 14:51:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664701937] [2023-08-27 14:51:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 14:51:49,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:51:49,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 295 transitions, 2896 flow. Second operand has 4 states, 4 states have (on average 376.25) internal successors, (1505), 4 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:49,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:49,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:51:49,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:50,008 INFO L124 PetriNetUnfolderBase]: 2735/4526 cut-off events. [2023-08-27 14:51:50,009 INFO L125 PetriNetUnfolderBase]: For 3536/3536 co-relation queries the response was YES. [2023-08-27 14:51:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13888 conditions, 4526 events. 2735/4526 cut-off events. For 3536/3536 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 29645 event pairs, 2106 based on Foata normal form. 72/3979 useless extension candidates. Maximal degree in co-relation 13841. Up to 4079 conditions per place. [2023-08-27 14:51:50,039 INFO L140 encePairwiseOnDemand]: 910/914 looper letters, 229 selfloop transitions, 24 changer transitions 0/255 dead transitions. [2023-08-27 14:51:50,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 255 transitions, 2922 flow [2023-08-27 14:51:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:51:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:51:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1545 transitions. [2023-08-27 14:51:50,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225929978118162 [2023-08-27 14:51:50,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1545 transitions. [2023-08-27 14:51:50,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1545 transitions. [2023-08-27 14:51:50,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:50,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1545 transitions. [2023-08-27 14:51:50,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 386.25) internal successors, (1545), 4 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:50,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:50,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:50,049 INFO L175 Difference]: Start difference. First operand has 108 places, 295 transitions, 2896 flow. Second operand 4 states and 1545 transitions. [2023-08-27 14:51:50,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 255 transitions, 2922 flow [2023-08-27 14:51:50,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 255 transitions, 2824 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:50,071 INFO L231 Difference]: Finished difference. Result has 108 places, 239 transitions, 2216 flow [2023-08-27 14:51:50,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2216, PETRI_PLACES=108, PETRI_TRANSITIONS=239} [2023-08-27 14:51:50,072 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 48 predicate places. [2023-08-27 14:51:50,072 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 239 transitions, 2216 flow [2023-08-27 14:51:50,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 376.25) internal successors, (1505), 4 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:50,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:50,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:50,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 14:51:50,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 14:51:50,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:50,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 906167042, now seen corresponding path program 1 times [2023-08-27 14:51:50,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:50,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418059248] [2023-08-27 14:51:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418059248] [2023-08-27 14:51:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418059248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:50,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:50,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 14:51:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913139721] [2023-08-27 14:51:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:51:50,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 914 [2023-08-27 14:51:50,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 239 transitions, 2216 flow. Second operand has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:50,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:50,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 914 [2023-08-27 14:51:50,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:51,215 INFO L124 PetriNetUnfolderBase]: 3221/5562 cut-off events. [2023-08-27 14:51:51,216 INFO L125 PetriNetUnfolderBase]: For 5331/5331 co-relation queries the response was YES. [2023-08-27 14:51:51,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18077 conditions, 5562 events. 3221/5562 cut-off events. For 5331/5331 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38388 event pairs, 2328 based on Foata normal form. 112/5063 useless extension candidates. Maximal degree in co-relation 18013. Up to 4504 conditions per place. [2023-08-27 14:51:51,253 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 436 selfloop transitions, 3 changer transitions 0/441 dead transitions. [2023-08-27 14:51:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 441 transitions, 5082 flow [2023-08-27 14:51:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:51:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:51:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1396 transitions. [2023-08-27 14:51:51,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38183807439824946 [2023-08-27 14:51:51,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1396 transitions. [2023-08-27 14:51:51,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1396 transitions. [2023-08-27 14:51:51,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:51,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1396 transitions. [2023-08-27 14:51:51,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:51,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:51,262 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:51,262 INFO L175 Difference]: Start difference. First operand has 108 places, 239 transitions, 2216 flow. Second operand 4 states and 1396 transitions. [2023-08-27 14:51:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 441 transitions, 5082 flow [2023-08-27 14:51:51,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 441 transitions, 5018 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:51,297 INFO L231 Difference]: Finished difference. Result has 110 places, 239 transitions, 2195 flow [2023-08-27 14:51:51,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2195, PETRI_PLACES=110, PETRI_TRANSITIONS=239} [2023-08-27 14:51:51,298 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 50 predicate places. [2023-08-27 14:51:51,298 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 239 transitions, 2195 flow [2023-08-27 14:51:51,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:51,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:51,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:51,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 14:51:51,299 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:51,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1436144437, now seen corresponding path program 1 times [2023-08-27 14:51:51,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:51,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598556995] [2023-08-27 14:51:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:51,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598556995] [2023-08-27 14:51:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598556995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:51,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:51:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:51:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013447046] [2023-08-27 14:51:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:51:51,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:51:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:51:51,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 914 [2023-08-27 14:51:51,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 239 transitions, 2195 flow. Second operand has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:51,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:51,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 914 [2023-08-27 14:51:51,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:52,143 INFO L124 PetriNetUnfolderBase]: 4016/6657 cut-off events. [2023-08-27 14:51:52,143 INFO L125 PetriNetUnfolderBase]: For 5570/5570 co-relation queries the response was YES. [2023-08-27 14:51:52,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20685 conditions, 6657 events. 4016/6657 cut-off events. For 5570/5570 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 40951 event pairs, 1092 based on Foata normal form. 174/6205 useless extension candidates. Maximal degree in co-relation 20622. Up to 4066 conditions per place. [2023-08-27 14:51:52,180 INFO L140 encePairwiseOnDemand]: 912/914 looper letters, 253 selfloop transitions, 1 changer transitions 0/254 dead transitions. [2023-08-27 14:51:52,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 254 transitions, 2742 flow [2023-08-27 14:51:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:51:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:51:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1190 transitions. [2023-08-27 14:51:52,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339897884755653 [2023-08-27 14:51:52,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1190 transitions. [2023-08-27 14:51:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1190 transitions. [2023-08-27 14:51:52,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:52,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1190 transitions. [2023-08-27 14:51:52,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:52,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:52,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:52,187 INFO L175 Difference]: Start difference. First operand has 110 places, 239 transitions, 2195 flow. Second operand 3 states and 1190 transitions. [2023-08-27 14:51:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 254 transitions, 2742 flow [2023-08-27 14:51:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 254 transitions, 2734 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:52,221 INFO L231 Difference]: Finished difference. Result has 109 places, 238 transitions, 2185 flow [2023-08-27 14:51:52,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2185, PETRI_PLACES=109, PETRI_TRANSITIONS=238} [2023-08-27 14:51:52,221 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2023-08-27 14:51:52,222 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 238 transitions, 2185 flow [2023-08-27 14:51:52,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:52,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:52,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:52,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 14:51:52,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:52,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1436144444, now seen corresponding path program 1 times [2023-08-27 14:51:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:52,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171151193] [2023-08-27 14:51:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171151193] [2023-08-27 14:51:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171151193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530555747] [2023-08-27 14:51:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:52,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:52,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:52,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:52,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 14:51:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:52,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:51:52,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:52,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530555747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:52,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:52,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [2] total 6 [2023-08-27 14:51:52,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110389551] [2023-08-27 14:51:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:52,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:52,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:51:52,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 914 [2023-08-27 14:51:52,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 238 transitions, 2185 flow. Second operand has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:52,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:52,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 914 [2023-08-27 14:51:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:53,388 INFO L124 PetriNetUnfolderBase]: 3885/7088 cut-off events. [2023-08-27 14:51:53,388 INFO L125 PetriNetUnfolderBase]: For 9293/9293 co-relation queries the response was YES. [2023-08-27 14:51:53,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24656 conditions, 7088 events. 3885/7088 cut-off events. For 9293/9293 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 52829 event pairs, 2544 based on Foata normal form. 84/6594 useless extension candidates. Maximal degree in co-relation 24564. Up to 5114 conditions per place. [2023-08-27 14:51:53,429 INFO L140 encePairwiseOnDemand]: 906/914 looper letters, 322 selfloop transitions, 44 changer transitions 0/368 dead transitions. [2023-08-27 14:51:53,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 368 transitions, 4157 flow [2023-08-27 14:51:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:51:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:51:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1727 transitions. [2023-08-27 14:51:53,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37789934354485777 [2023-08-27 14:51:53,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1727 transitions. [2023-08-27 14:51:53,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1727 transitions. [2023-08-27 14:51:53,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:53,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1727 transitions. [2023-08-27 14:51:53,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:53,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:53,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:53,440 INFO L175 Difference]: Start difference. First operand has 109 places, 238 transitions, 2185 flow. Second operand 5 states and 1727 transitions. [2023-08-27 14:51:53,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 368 transitions, 4157 flow [2023-08-27 14:51:53,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 368 transitions, 4156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:53,486 INFO L231 Difference]: Finished difference. Result has 114 places, 266 transitions, 2785 flow [2023-08-27 14:51:53,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2785, PETRI_PLACES=114, PETRI_TRANSITIONS=266} [2023-08-27 14:51:53,486 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 54 predicate places. [2023-08-27 14:51:53,486 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 266 transitions, 2785 flow [2023-08-27 14:51:53,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:53,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:53,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:53,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:53,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:53,692 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:53,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash 16867436, now seen corresponding path program 1 times [2023-08-27 14:51:53,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:53,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656223470] [2023-08-27 14:51:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:53,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656223470] [2023-08-27 14:51:53,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656223470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570528730] [2023-08-27 14:51:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:53,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:53,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:53,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:53,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 14:51:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:53,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:53,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:53,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570528730] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:53,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 14:51:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823514942] [2023-08-27 14:51:53,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:54,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:51:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:51:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:51:54,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 914 [2023-08-27 14:51:54,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 266 transitions, 2785 flow. Second operand has 7 states, 7 states have (on average 383.14285714285717) internal successors, (2682), 7 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:54,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:54,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 914 [2023-08-27 14:51:54,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:56,213 INFO L124 PetriNetUnfolderBase]: 11250/18119 cut-off events. [2023-08-27 14:51:56,213 INFO L125 PetriNetUnfolderBase]: For 13439/13439 co-relation queries the response was YES. [2023-08-27 14:51:56,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 18119 events. 11250/18119 cut-off events. For 13439/13439 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 118268 event pairs, 2088 based on Foata normal form. 120/16877 useless extension candidates. Maximal degree in co-relation 52300. Up to 5917 conditions per place. [2023-08-27 14:51:56,296 INFO L140 encePairwiseOnDemand]: 907/914 looper letters, 357 selfloop transitions, 12 changer transitions 0/369 dead transitions. [2023-08-27 14:51:56,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 369 transitions, 3827 flow [2023-08-27 14:51:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:51:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:51:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2807 transitions. [2023-08-27 14:51:56,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387308533916849 [2023-08-27 14:51:56,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2807 transitions. [2023-08-27 14:51:56,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2807 transitions. [2023-08-27 14:51:56,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:56,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2807 transitions. [2023-08-27 14:51:56,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 401.0) internal successors, (2807), 7 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 914.0) internal successors, (7312), 8 states have internal predecessors, (7312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,309 INFO L175 Difference]: Start difference. First operand has 114 places, 266 transitions, 2785 flow. Second operand 7 states and 2807 transitions. [2023-08-27 14:51:56,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 369 transitions, 3827 flow [2023-08-27 14:51:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 369 transitions, 3728 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 14:51:56,380 INFO L231 Difference]: Finished difference. Result has 123 places, 275 transitions, 2803 flow [2023-08-27 14:51:56,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2803, PETRI_PLACES=123, PETRI_TRANSITIONS=275} [2023-08-27 14:51:56,381 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2023-08-27 14:51:56,381 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 275 transitions, 2803 flow [2023-08-27 14:51:56,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 383.14285714285717) internal successors, (2682), 7 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:56,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:56,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:56,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 14:51:56,587 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:56,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash 16867435, now seen corresponding path program 1 times [2023-08-27 14:51:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843960767] [2023-08-27 14:51:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843960767] [2023-08-27 14:51:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843960767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398184454] [2023-08-27 14:51:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:56,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:56,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:56,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:56,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 14:51:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:56,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:56,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:56,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:51:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398184454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:51:56,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:51:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 14:51:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719274778] [2023-08-27 14:51:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:51:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:51:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:51:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 14:51:56,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 914 [2023-08-27 14:51:56,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 275 transitions, 2803 flow. Second operand has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:56,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 914 [2023-08-27 14:51:56,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:59,199 INFO L124 PetriNetUnfolderBase]: 12308/19705 cut-off events. [2023-08-27 14:51:59,200 INFO L125 PetriNetUnfolderBase]: For 40266/40266 co-relation queries the response was YES. [2023-08-27 14:51:59,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63877 conditions, 19705 events. 12308/19705 cut-off events. For 40266/40266 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 130449 event pairs, 3090 based on Foata normal form. 750/20453 useless extension candidates. Maximal degree in co-relation 63778. Up to 11452 conditions per place. [2023-08-27 14:51:59,323 INFO L140 encePairwiseOnDemand]: 907/914 looper letters, 286 selfloop transitions, 11 changer transitions 0/297 dead transitions. [2023-08-27 14:51:59,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 297 transitions, 3485 flow [2023-08-27 14:51:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:51:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:51:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1582 transitions. [2023-08-27 14:51:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327133479212254 [2023-08-27 14:51:59,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1582 transitions. [2023-08-27 14:51:59,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1582 transitions. [2023-08-27 14:51:59,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:59,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1582 transitions. [2023-08-27 14:51:59,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 395.5) internal successors, (1582), 4 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:59,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:59,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:59,330 INFO L175 Difference]: Start difference. First operand has 123 places, 275 transitions, 2803 flow. Second operand 4 states and 1582 transitions. [2023-08-27 14:51:59,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 297 transitions, 3485 flow [2023-08-27 14:51:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 297 transitions, 3473 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 14:51:59,422 INFO L231 Difference]: Finished difference. Result has 125 places, 277 transitions, 2881 flow [2023-08-27 14:51:59,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2881, PETRI_PLACES=125, PETRI_TRANSITIONS=277} [2023-08-27 14:51:59,423 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 65 predicate places. [2023-08-27 14:51:59,423 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 277 transitions, 2881 flow [2023-08-27 14:51:59,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:59,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:59,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:59,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:59,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 14:51:59,624 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:51:59,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 16867430, now seen corresponding path program 1 times [2023-08-27 14:51:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:59,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893630141] [2023-08-27 14:51:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893630141] [2023-08-27 14:51:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893630141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707498232] [2023-08-27 14:51:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:59,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:59,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:59,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 14:51:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:59,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:59,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:59,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:51:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707498232] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:59,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:59,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-08-27 14:51:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023002905] [2023-08-27 14:51:59,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 14:51:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 14:51:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 14:51:59,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 914 [2023-08-27 14:51:59,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 277 transitions, 2881 flow. Second operand has 8 states, 8 states have (on average 328.25) internal successors, (2626), 8 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:59,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:59,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 914 [2023-08-27 14:51:59,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:04,105 INFO L124 PetriNetUnfolderBase]: 17460/28457 cut-off events. [2023-08-27 14:52:04,105 INFO L125 PetriNetUnfolderBase]: For 78249/78249 co-relation queries the response was YES. [2023-08-27 14:52:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90354 conditions, 28457 events. 17460/28457 cut-off events. For 78249/78249 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 204888 event pairs, 8136 based on Foata normal form. 2916/31371 useless extension candidates. Maximal degree in co-relation 90223. Up to 13101 conditions per place. [2023-08-27 14:52:04,313 INFO L140 encePairwiseOnDemand]: 903/914 looper letters, 302 selfloop transitions, 135 changer transitions 0/437 dead transitions. [2023-08-27 14:52:04,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 437 transitions, 5199 flow [2023-08-27 14:52:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 14:52:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 14:52:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2698 transitions. [2023-08-27 14:52:04,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36898249452954046 [2023-08-27 14:52:04,316 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2698 transitions. [2023-08-27 14:52:04,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2698 transitions. [2023-08-27 14:52:04,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:04,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2698 transitions. [2023-08-27 14:52:04,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 337.25) internal successors, (2698), 8 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:04,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 914.0) internal successors, (8226), 9 states have internal predecessors, (8226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:04,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 914.0) internal successors, (8226), 9 states have internal predecessors, (8226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:04,326 INFO L175 Difference]: Start difference. First operand has 125 places, 277 transitions, 2881 flow. Second operand 8 states and 2698 transitions. [2023-08-27 14:52:04,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 437 transitions, 5199 flow [2023-08-27 14:52:04,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 437 transitions, 5155 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-27 14:52:04,465 INFO L231 Difference]: Finished difference. Result has 129 places, 359 transitions, 4480 flow [2023-08-27 14:52:04,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4480, PETRI_PLACES=129, PETRI_TRANSITIONS=359} [2023-08-27 14:52:04,466 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 69 predicate places. [2023-08-27 14:52:04,466 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 359 transitions, 4480 flow [2023-08-27 14:52:04,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 328.25) internal successors, (2626), 8 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:04,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:04,467 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 14:52:04,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:04,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:04,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:04,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1039334731, now seen corresponding path program 2 times [2023-08-27 14:52:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:04,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393639786] [2023-08-27 14:52:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:04,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393639786] [2023-08-27 14:52:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393639786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909241739] [2023-08-27 14:52:04,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:52:04,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:04,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:04,869 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:04,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 14:52:05,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:52:05,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:05,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:52:05,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 14:52:05,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:52:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909241739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:52:05,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:52:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 14:52:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183716748] [2023-08-27 14:52:05,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:52:05,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:52:05,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:52:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 14:52:05,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 914 [2023-08-27 14:52:05,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 359 transitions, 4480 flow. Second operand has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:05,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:05,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 914 [2023-08-27 14:52:05,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:08,364 INFO L124 PetriNetUnfolderBase]: 13120/22171 cut-off events. [2023-08-27 14:52:08,364 INFO L125 PetriNetUnfolderBase]: For 59492/59516 co-relation queries the response was YES. [2023-08-27 14:52:08,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77282 conditions, 22171 events. 13120/22171 cut-off events. For 59492/59516 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 172675 event pairs, 8388 based on Foata normal form. 8/22089 useless extension candidates. Maximal degree in co-relation 77150. Up to 21538 conditions per place. [2023-08-27 14:52:08,512 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 344 selfloop transitions, 12 changer transitions 0/358 dead transitions. [2023-08-27 14:52:08,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 358 transitions, 5165 flow [2023-08-27 14:52:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:52:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:52:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1430 transitions. [2023-08-27 14:52:08,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911378555798687 [2023-08-27 14:52:08,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1430 transitions. [2023-08-27 14:52:08,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1430 transitions. [2023-08-27 14:52:08,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:08,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1430 transitions. [2023-08-27 14:52:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 357.5) internal successors, (1430), 4 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:08,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:08,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:08,520 INFO L175 Difference]: Start difference. First operand has 129 places, 359 transitions, 4480 flow. Second operand 4 states and 1430 transitions. [2023-08-27 14:52:08,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 358 transitions, 5165 flow [2023-08-27 14:52:08,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 358 transitions, 5124 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-27 14:52:08,650 INFO L231 Difference]: Finished difference. Result has 128 places, 358 transitions, 4436 flow [2023-08-27 14:52:08,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4436, PETRI_PLACES=128, PETRI_TRANSITIONS=358} [2023-08-27 14:52:08,650 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 68 predicate places. [2023-08-27 14:52:08,650 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 358 transitions, 4436 flow [2023-08-27 14:52:08,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:08,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:08,651 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 14:52:08,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:08,856 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:08,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 105259536, now seen corresponding path program 1 times [2023-08-27 14:52:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603552042] [2023-08-27 14:52:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:09,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603552042] [2023-08-27 14:52:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603552042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:09,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142715425] [2023-08-27 14:52:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:09,192 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:09,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 14:52:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:09,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 14:52:09,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:09,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142715425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:09,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-27 14:52:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293140982] [2023-08-27 14:52:09,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:52:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:52:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:52:09,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:52:09,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 358 transitions, 4436 flow. Second operand has 25 states, 25 states have (on average 351.12) internal successors, (8778), 25 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:09,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:09,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:52:09,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:13,592 INFO L124 PetriNetUnfolderBase]: 14524/24763 cut-off events. [2023-08-27 14:52:13,592 INFO L125 PetriNetUnfolderBase]: For 125270/125294 co-relation queries the response was YES. [2023-08-27 14:52:13,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91948 conditions, 24763 events. 14524/24763 cut-off events. For 125270/125294 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 193738 event pairs, 8388 based on Foata normal form. 1158/25831 useless extension candidates. Maximal degree in co-relation 91816. Up to 21865 conditions per place. [2023-08-27 14:52:13,797 INFO L140 encePairwiseOnDemand]: 901/914 looper letters, 74 selfloop transitions, 534 changer transitions 0/610 dead transitions. [2023-08-27 14:52:13,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 610 transitions, 8544 flow [2023-08-27 14:52:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 14:52:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 14:52:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8659 transitions. [2023-08-27 14:52:13,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947392414296134 [2023-08-27 14:52:13,802 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8659 transitions. [2023-08-27 14:52:13,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8659 transitions. [2023-08-27 14:52:13,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:13,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8659 transitions. [2023-08-27 14:52:13,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 360.7916666666667) internal successors, (8659), 24 states have internal predecessors, (8659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:13,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 914.0) internal successors, (22850), 25 states have internal predecessors, (22850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:13,828 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 914.0) internal successors, (22850), 25 states have internal predecessors, (22850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:13,828 INFO L175 Difference]: Start difference. First operand has 128 places, 358 transitions, 4436 flow. Second operand 24 states and 8659 transitions. [2023-08-27 14:52:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 610 transitions, 8544 flow [2023-08-27 14:52:13,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 610 transitions, 8519 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:52:13,981 INFO L231 Difference]: Finished difference. Result has 161 places, 610 transitions, 8805 flow [2023-08-27 14:52:13,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8805, PETRI_PLACES=161, PETRI_TRANSITIONS=610} [2023-08-27 14:52:13,981 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 101 predicate places. [2023-08-27 14:52:13,981 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 610 transitions, 8805 flow [2023-08-27 14:52:13,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 351.12) internal successors, (8778), 25 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:13,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:13,982 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:13,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:14,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 14:52:14,183 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:14,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1093911096, now seen corresponding path program 1 times [2023-08-27 14:52:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448055629] [2023-08-27 14:52:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:14,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448055629] [2023-08-27 14:52:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448055629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329278552] [2023-08-27 14:52:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:14,333 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:14,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 14:52:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:14,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 14:52:14,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:14,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329278552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:14,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 14:52:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256581753] [2023-08-27 14:52:14,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:14,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 14:52:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 14:52:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 14:52:14,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 914 [2023-08-27 14:52:14,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 610 transitions, 8805 flow. Second operand has 13 states, 13 states have (on average 376.2307692307692) internal successors, (4891), 13 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:14,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:14,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 914 [2023-08-27 14:52:14,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:20,858 INFO L124 PetriNetUnfolderBase]: 17224/30379 cut-off events. [2023-08-27 14:52:20,859 INFO L125 PetriNetUnfolderBase]: For 155294/155294 co-relation queries the response was YES. [2023-08-27 14:52:21,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144985 conditions, 30379 events. 17224/30379 cut-off events. For 155294/155294 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 239152 event pairs, 8388 based on Foata normal form. 2592/32883 useless extension candidates. Maximal degree in co-relation 144841. Up to 21224 conditions per place. [2023-08-27 14:52:21,136 INFO L140 encePairwiseOnDemand]: 910/914 looper letters, 773 selfloop transitions, 571 changer transitions 0/1346 dead transitions. [2023-08-27 14:52:21,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1346 transitions, 22555 flow [2023-08-27 14:52:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 14:52:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 14:52:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4581 transitions. [2023-08-27 14:52:21,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176695842450766 [2023-08-27 14:52:21,140 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4581 transitions. [2023-08-27 14:52:21,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4581 transitions. [2023-08-27 14:52:21,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:21,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4581 transitions. [2023-08-27 14:52:21,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 381.75) internal successors, (4581), 12 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 914.0) internal successors, (11882), 13 states have internal predecessors, (11882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,156 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 914.0) internal successors, (11882), 13 states have internal predecessors, (11882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,156 INFO L175 Difference]: Start difference. First operand has 161 places, 610 transitions, 8805 flow. Second operand 12 states and 4581 transitions. [2023-08-27 14:52:21,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 1346 transitions, 22555 flow [2023-08-27 14:52:21,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1346 transitions, 19045 flow, removed 1025 selfloop flow, removed 11 redundant places. [2023-08-27 14:52:21,652 INFO L231 Difference]: Finished difference. Result has 167 places, 952 transitions, 14439 flow [2023-08-27 14:52:21,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=7243, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14439, PETRI_PLACES=167, PETRI_TRANSITIONS=952} [2023-08-27 14:52:21,653 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 107 predicate places. [2023-08-27 14:52:21,654 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 952 transitions, 14439 flow [2023-08-27 14:52:21,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 376.2307692307692) internal successors, (4891), 13 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:21,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:21,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 14:52:21,861 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:21,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 372210790, now seen corresponding path program 1 times [2023-08-27 14:52:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095802772] [2023-08-27 14:52:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:21,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:21,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095802772] [2023-08-27 14:52:21,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095802772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:52:21,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:52:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:52:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828442661] [2023-08-27 14:52:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:52:21,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:52:21,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:52:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:52:21,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 914 [2023-08-27 14:52:21,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 952 transitions, 14439 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:21,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 914 [2023-08-27 14:52:21,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:30,522 INFO L124 PetriNetUnfolderBase]: 20480/34571 cut-off events. [2023-08-27 14:52:30,522 INFO L125 PetriNetUnfolderBase]: For 172000/172000 co-relation queries the response was YES. [2023-08-27 14:52:30,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149231 conditions, 34571 events. 20480/34571 cut-off events. For 172000/172000 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 248698 event pairs, 2460 based on Foata normal form. 720/35289 useless extension candidates. Maximal degree in co-relation 149075. Up to 20309 conditions per place. [2023-08-27 14:52:30,973 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 963 selfloop transitions, 2 changer transitions 0/965 dead transitions. [2023-08-27 14:52:30,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 965 transitions, 16413 flow [2023-08-27 14:52:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:52:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:52:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1185 transitions. [2023-08-27 14:52:30,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43216630196936545 [2023-08-27 14:52:30,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1185 transitions. [2023-08-27 14:52:30,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1185 transitions. [2023-08-27 14:52:30,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:30,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1185 transitions. [2023-08-27 14:52:30,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:30,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:30,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:30,978 INFO L175 Difference]: Start difference. First operand has 167 places, 952 transitions, 14439 flow. Second operand 3 states and 1185 transitions. [2023-08-27 14:52:30,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 965 transitions, 16413 flow [2023-08-27 14:52:31,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 965 transitions, 14545 flow, removed 705 selfloop flow, removed 5 redundant places. [2023-08-27 14:52:31,496 INFO L231 Difference]: Finished difference. Result has 165 places, 953 transitions, 12583 flow [2023-08-27 14:52:31,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=12571, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=950, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12583, PETRI_PLACES=165, PETRI_TRANSITIONS=953} [2023-08-27 14:52:31,497 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 105 predicate places. [2023-08-27 14:52:31,497 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 953 transitions, 12583 flow [2023-08-27 14:52:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:31,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:31,497 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:31,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 14:52:31,498 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:31,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1621003810, now seen corresponding path program 2 times [2023-08-27 14:52:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292486012] [2023-08-27 14:52:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 14:52:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292486012] [2023-08-27 14:52:31,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292486012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785542760] [2023-08-27 14:52:31,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:52:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:31,687 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:31,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 14:52:32,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:52:32,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:32,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 14:52:32,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-27 14:52:32,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-27 14:52:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785542760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:32,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-27 14:52:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805899133] [2023-08-27 14:52:32,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 14:52:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 14:52:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-27 14:52:32,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 914 [2023-08-27 14:52:32,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 953 transitions, 12583 flow. Second operand has 18 states, 18 states have (on average 327.5) internal successors, (5895), 18 states have internal predecessors, (5895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:32,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:32,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 914 [2023-08-27 14:52:32,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:40,564 INFO L124 PetriNetUnfolderBase]: 20104/34081 cut-off events. [2023-08-27 14:52:40,564 INFO L125 PetriNetUnfolderBase]: For 144044/144044 co-relation queries the response was YES. [2023-08-27 14:52:40,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141851 conditions, 34081 events. 20104/34081 cut-off events. For 144044/144044 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 247357 event pairs, 1098 based on Foata normal form. 552/34631 useless extension candidates. Maximal degree in co-relation 141700. Up to 7606 conditions per place. [2023-08-27 14:52:40,949 INFO L140 encePairwiseOnDemand]: 904/914 looper letters, 711 selfloop transitions, 411 changer transitions 0/1122 dead transitions. [2023-08-27 14:52:40,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1122 transitions, 15657 flow [2023-08-27 14:52:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 14:52:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 14:52:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4397 transitions. [2023-08-27 14:52:40,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700555462043427 [2023-08-27 14:52:40,955 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4397 transitions. [2023-08-27 14:52:40,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4397 transitions. [2023-08-27 14:52:40,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:40,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4397 transitions. [2023-08-27 14:52:40,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 338.2307692307692) internal successors, (4397), 13 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:40,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 914.0) internal successors, (12796), 14 states have internal predecessors, (12796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:40,969 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 914.0) internal successors, (12796), 14 states have internal predecessors, (12796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:40,969 INFO L175 Difference]: Start difference. First operand has 165 places, 953 transitions, 12583 flow. Second operand 13 states and 4397 transitions. [2023-08-27 14:52:40,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1122 transitions, 15657 flow [2023-08-27 14:52:41,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1122 transitions, 15643 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:52:41,547 INFO L231 Difference]: Finished difference. Result has 178 places, 960 transitions, 13502 flow [2023-08-27 14:52:41,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=12555, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13502, PETRI_PLACES=178, PETRI_TRANSITIONS=960} [2023-08-27 14:52:41,548 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 118 predicate places. [2023-08-27 14:52:41,548 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 960 transitions, 13502 flow [2023-08-27 14:52:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.5) internal successors, (5895), 18 states have internal predecessors, (5895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:41,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:41,549 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-27 14:52:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 14:52:41,755 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:41,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 4733328, now seen corresponding path program 2 times [2023-08-27 14:52:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:41,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417702400] [2023-08-27 14:52:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:42,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417702400] [2023-08-27 14:52:42,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417702400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327664582] [2023-08-27 14:52:42,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:52:42,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:42,360 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:42,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 14:52:42,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:52:42,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:42,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:52:42,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-27 14:52:42,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:52:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327664582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:52:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:52:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2023-08-27 14:52:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667014282] [2023-08-27 14:52:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:52:42,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:52:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:52:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2023-08-27 14:52:42,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 914 [2023-08-27 14:52:42,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 960 transitions, 13502 flow. Second operand has 4 states, 4 states have (on average 352.25) internal successors, (1409), 4 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:42,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:42,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 914 [2023-08-27 14:52:42,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:52,632 INFO L124 PetriNetUnfolderBase]: 24204/41235 cut-off events. [2023-08-27 14:52:52,633 INFO L125 PetriNetUnfolderBase]: For 219926/219926 co-relation queries the response was YES. [2023-08-27 14:52:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179079 conditions, 41235 events. 24204/41235 cut-off events. For 219926/219926 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 330523 event pairs, 12942 based on Foata normal form. 6/41205 useless extension candidates. Maximal degree in co-relation 178925. Up to 27313 conditions per place. [2023-08-27 14:52:53,198 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 950 selfloop transitions, 53 changer transitions 0/1005 dead transitions. [2023-08-27 14:52:53,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1005 transitions, 15852 flow [2023-08-27 14:52:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:52:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:52:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1462 transitions. [2023-08-27 14:52:53,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399890590809628 [2023-08-27 14:52:53,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1462 transitions. [2023-08-27 14:52:53,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1462 transitions. [2023-08-27 14:52:53,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:53,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1462 transitions. [2023-08-27 14:52:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 365.5) internal successors, (1462), 4 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:53,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:53,205 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:53,205 INFO L175 Difference]: Start difference. First operand has 178 places, 960 transitions, 13502 flow. Second operand 4 states and 1462 transitions. [2023-08-27 14:52:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1005 transitions, 15852 flow [2023-08-27 14:52:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1005 transitions, 15419 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 14:52:54,070 INFO L231 Difference]: Finished difference. Result has 176 places, 964 transitions, 13248 flow [2023-08-27 14:52:54,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=12983, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=905, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=13248, PETRI_PLACES=176, PETRI_TRANSITIONS=964} [2023-08-27 14:52:54,071 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 116 predicate places. [2023-08-27 14:52:54,071 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 964 transitions, 13248 flow [2023-08-27 14:52:54,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.25) internal successors, (1409), 4 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:54,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:54,071 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:54,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:54,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 14:52:54,273 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:52:54,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1356028110, now seen corresponding path program 2 times [2023-08-27 14:52:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756686239] [2023-08-27 14:52:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:54,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756686239] [2023-08-27 14:52:54,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756686239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302299588] [2023-08-27 14:52:54,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:52:54,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:54,587 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:54,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 14:52:54,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:52:54,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:54,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:52:54,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-08-27 14:52:54,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-08-27 14:52:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302299588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:54,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 2, 2] total 14 [2023-08-27 14:52:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305268575] [2023-08-27 14:52:54,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 14:52:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 14:52:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-27 14:52:54,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 914 [2023-08-27 14:52:54,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 964 transitions, 13248 flow. Second operand has 15 states, 15 states have (on average 370.4) internal successors, (5556), 15 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:54,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:54,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 914 [2023-08-27 14:52:54,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:05,045 INFO L124 PetriNetUnfolderBase]: 24294/41793 cut-off events. [2023-08-27 14:53:05,045 INFO L125 PetriNetUnfolderBase]: For 253993/253993 co-relation queries the response was YES. [2023-08-27 14:53:05,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175232 conditions, 41793 events. 24294/41793 cut-off events. For 253993/253993 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 337081 event pairs, 12942 based on Foata normal form. 864/42567 useless extension candidates. Maximal degree in co-relation 175077. Up to 30195 conditions per place. [2023-08-27 14:53:05,580 INFO L140 encePairwiseOnDemand]: 908/914 looper letters, 684 selfloop transitions, 650 changer transitions 70/1406 dead transitions. [2023-08-27 14:53:05,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1406 transitions, 20476 flow [2023-08-27 14:53:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 14:53:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 14:53:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5613 transitions. [2023-08-27 14:53:05,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40940919037199125 [2023-08-27 14:53:05,584 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5613 transitions. [2023-08-27 14:53:05,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5613 transitions. [2023-08-27 14:53:05,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:05,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5613 transitions. [2023-08-27 14:53:05,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 374.2) internal successors, (5613), 15 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:05,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 914.0) internal successors, (14624), 16 states have internal predecessors, (14624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:05,596 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 914.0) internal successors, (14624), 16 states have internal predecessors, (14624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:05,597 INFO L175 Difference]: Start difference. First operand has 176 places, 964 transitions, 13248 flow. Second operand 15 states and 5613 transitions. [2023-08-27 14:53:05,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1406 transitions, 20476 flow [2023-08-27 14:53:06,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1406 transitions, 18692 flow, removed 103 selfloop flow, removed 13 redundant places. [2023-08-27 14:53:06,551 INFO L231 Difference]: Finished difference. Result has 177 places, 928 transitions, 11278 flow [2023-08-27 14:53:06,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=10002, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=587, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11278, PETRI_PLACES=177, PETRI_TRANSITIONS=928} [2023-08-27 14:53:06,552 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 117 predicate places. [2023-08-27 14:53:06,552 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 928 transitions, 11278 flow [2023-08-27 14:53:06,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 370.4) internal successors, (5556), 15 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:06,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:06,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:06,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 14:53:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:06,754 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:53:06,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -38460835, now seen corresponding path program 1 times [2023-08-27 14:53:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997932067] [2023-08-27 14:53:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:53:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997932067] [2023-08-27 14:53:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997932067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:53:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:53:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:53:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498719176] [2023-08-27 14:53:06,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:53:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:53:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:53:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:53:06,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 914 [2023-08-27 14:53:06,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 928 transitions, 11278 flow. Second operand has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:06,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:06,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 914 [2023-08-27 14:53:06,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:15,877 INFO L124 PetriNetUnfolderBase]: 25102/42119 cut-off events. [2023-08-27 14:53:15,878 INFO L125 PetriNetUnfolderBase]: For 193973/194181 co-relation queries the response was YES. [2023-08-27 14:53:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182415 conditions, 42119 events. 25102/42119 cut-off events. For 193973/194181 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 332853 event pairs, 6912 based on Foata normal form. 3324/45371 useless extension candidates. Maximal degree in co-relation 182257. Up to 27475 conditions per place. [2023-08-27 14:53:16,390 INFO L140 encePairwiseOnDemand]: 911/914 looper letters, 857 selfloop transitions, 2 changer transitions 100/961 dead transitions. [2023-08-27 14:53:16,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 961 transitions, 13512 flow [2023-08-27 14:53:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:53:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:53:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1181 transitions. [2023-08-27 14:53:16,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43070751276440555 [2023-08-27 14:53:16,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1181 transitions. [2023-08-27 14:53:16,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1181 transitions. [2023-08-27 14:53:16,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:16,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1181 transitions. [2023-08-27 14:53:16,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 393.6666666666667) internal successors, (1181), 3 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:16,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:16,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:16,394 INFO L175 Difference]: Start difference. First operand has 177 places, 928 transitions, 11278 flow. Second operand 3 states and 1181 transitions. [2023-08-27 14:53:16,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 961 transitions, 13512 flow [2023-08-27 14:53:16,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 961 transitions, 12143 flow, removed 151 selfloop flow, removed 12 redundant places. [2023-08-27 14:53:17,004 INFO L231 Difference]: Finished difference. Result has 168 places, 829 transitions, 8299 flow [2023-08-27 14:53:17,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=9909, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8299, PETRI_PLACES=168, PETRI_TRANSITIONS=829} [2023-08-27 14:53:17,005 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 108 predicate places. [2023-08-27 14:53:17,005 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 829 transitions, 8299 flow [2023-08-27 14:53:17,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:17,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:17,006 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 14:53:17,006 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:53:17,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 457588912, now seen corresponding path program 1 times [2023-08-27 14:53:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613359722] [2023-08-27 14:53:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613359722] [2023-08-27 14:53:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613359722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726831240] [2023-08-27 14:53:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:17,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:53:17,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:53:17,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 14:53:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:17,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 14:53:17,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:53:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:17,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:53:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726831240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:53:18,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:53:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-27 14:53:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082900483] [2023-08-27 14:53:18,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:53:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 14:53:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 14:53:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 14:53:18,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 914 [2023-08-27 14:53:18,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 829 transitions, 8299 flow. Second operand has 49 states, 49 states have (on average 351.1224489795918) internal successors, (17205), 49 states have internal predecessors, (17205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:18,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:18,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 914 [2023-08-27 14:53:18,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:30,405 INFO L124 PetriNetUnfolderBase]: 28930/50223 cut-off events. [2023-08-27 14:53:30,405 INFO L125 PetriNetUnfolderBase]: For 1519986/1519986 co-relation queries the response was YES. [2023-08-27 14:53:30,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230966 conditions, 50223 events. 28930/50223 cut-off events. For 1519986/1519986 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 389456 event pairs, 12220 based on Foata normal form. 5184/55291 useless extension candidates. Maximal degree in co-relation 230814. Up to 38531 conditions per place. [2023-08-27 14:53:31,028 INFO L140 encePairwiseOnDemand]: 903/914 looper letters, 101 selfloop transitions, 1518 changer transitions 0/1621 dead transitions. [2023-08-27 14:53:31,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1621 transitions, 19913 flow [2023-08-27 14:53:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 14:53:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 14:53:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 17225 transitions. [2023-08-27 14:53:31,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3926194383661561 [2023-08-27 14:53:31,041 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 17225 transitions. [2023-08-27 14:53:31,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 17225 transitions. [2023-08-27 14:53:31,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:31,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 17225 transitions. [2023-08-27 14:53:31,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 358.8541666666667) internal successors, (17225), 48 states have internal predecessors, (17225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:31,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 914.0) internal successors, (44786), 49 states have internal predecessors, (44786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:31,091 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 914.0) internal successors, (44786), 49 states have internal predecessors, (44786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:31,091 INFO L175 Difference]: Start difference. First operand has 168 places, 829 transitions, 8299 flow. Second operand 48 states and 17225 transitions. [2023-08-27 14:53:31,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 1621 transitions, 19913 flow [2023-08-27 14:53:31,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1621 transitions, 19909 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 14:53:31,754 INFO L231 Difference]: Finished difference. Result has 236 places, 1621 transitions, 20753 flow [2023-08-27 14:53:31,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=8295, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=757, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=20753, PETRI_PLACES=236, PETRI_TRANSITIONS=1621} [2023-08-27 14:53:31,756 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 176 predicate places. [2023-08-27 14:53:31,756 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 1621 transitions, 20753 flow [2023-08-27 14:53:31,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 351.1224489795918) internal successors, (17205), 49 states have internal predecessors, (17205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:31,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:31,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:31,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 14:53:31,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:31,965 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:53:31,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2075573725, now seen corresponding path program 1 times [2023-08-27 14:53:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:31,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37259372] [2023-08-27 14:53:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 14:53:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37259372] [2023-08-27 14:53:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37259372] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736908766] [2023-08-27 14:53:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:32,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:53:32,123 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:53:32,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 14:53:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:32,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 14:53:32,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:53:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 14:53:32,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:53:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 14:53:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736908766] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:32,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 14:53:32,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2023-08-27 14:53:32,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169757656] [2023-08-27 14:53:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:53:32,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 14:53:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 14:53:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-27 14:53:32,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 914 [2023-08-27 14:53:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 1621 transitions, 20753 flow. Second operand has 5 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:32,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:32,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 914 [2023-08-27 14:53:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:47,676 INFO L124 PetriNetUnfolderBase]: 28918/50285 cut-off events. [2023-08-27 14:53:47,676 INFO L125 PetriNetUnfolderBase]: For 373102/373102 co-relation queries the response was YES. [2023-08-27 14:53:48,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264568 conditions, 50285 events. 28918/50285 cut-off events. For 373102/373102 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 389730 event pairs, 12220 based on Foata normal form. 12/50277 useless extension candidates. Maximal degree in co-relation 246078. Up to 37112 conditions per place. [2023-08-27 14:53:48,630 INFO L140 encePairwiseOnDemand]: 908/914 looper letters, 2668 selfloop transitions, 145 changer transitions 50/2865 dead transitions. [2023-08-27 14:53:48,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 2865 transitions, 42385 flow [2023-08-27 14:53:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:53:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:53:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1647 transitions. [2023-08-27 14:53:48,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36039387308533916 [2023-08-27 14:53:48,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1647 transitions. [2023-08-27 14:53:48,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1647 transitions. [2023-08-27 14:53:48,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:48,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1647 transitions. [2023-08-27 14:53:48,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.4) internal successors, (1647), 5 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:48,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:48,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:48,636 INFO L175 Difference]: Start difference. First operand has 236 places, 1621 transitions, 20753 flow. Second operand 5 states and 1647 transitions. [2023-08-27 14:53:48,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 2865 transitions, 42385 flow [2023-08-27 14:53:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 2865 transitions, 34161 flow, removed 2793 selfloop flow, removed 23 redundant places. [2023-08-27 14:53:50,136 INFO L231 Difference]: Finished difference. Result has 217 places, 1619 transitions, 16438 flow [2023-08-27 14:53:50,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=16148, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=16438, PETRI_PLACES=217, PETRI_TRANSITIONS=1619} [2023-08-27 14:53:50,138 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 157 predicate places. [2023-08-27 14:53:50,138 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 1619 transitions, 16438 flow [2023-08-27 14:53:50,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:50,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:50,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:50,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-27 14:53:50,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:50,344 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:53:50,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1523807521, now seen corresponding path program 1 times [2023-08-27 14:53:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282816688] [2023-08-27 14:53:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 14:53:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282816688] [2023-08-27 14:53:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282816688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:53:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:53:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 14:53:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885946533] [2023-08-27 14:53:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:53:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:53:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:53:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:53:50,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 914 [2023-08-27 14:53:50,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1619 transitions, 16438 flow. Second operand has 4 states, 4 states have (on average 375.25) internal successors, (1501), 4 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:50,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:50,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 914 [2023-08-27 14:53:50,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:02,606 INFO L124 PetriNetUnfolderBase]: 21058/38539 cut-off events. [2023-08-27 14:54:02,607 INFO L125 PetriNetUnfolderBase]: For 341497/341530 co-relation queries the response was YES. [2023-08-27 14:54:03,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187427 conditions, 38539 events. 21058/38539 cut-off events. For 341497/341530 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 297816 event pairs, 7364 based on Foata normal form. 817/39323 useless extension candidates. Maximal degree in co-relation 170724. Up to 34420 conditions per place. [2023-08-27 14:54:03,226 INFO L140 encePairwiseOnDemand]: 909/914 looper letters, 1571 selfloop transitions, 97 changer transitions 24/1694 dead transitions. [2023-08-27 14:54:03,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1694 transitions, 20467 flow [2023-08-27 14:54:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:54:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:54:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1528 transitions. [2023-08-27 14:54:03,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179431072210066 [2023-08-27 14:54:03,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1528 transitions. [2023-08-27 14:54:03,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1528 transitions. [2023-08-27 14:54:03,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:54:03,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1528 transitions. [2023-08-27 14:54:03,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:03,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:03,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:03,231 INFO L175 Difference]: Start difference. First operand has 217 places, 1619 transitions, 16438 flow. Second operand 4 states and 1528 transitions. [2023-08-27 14:54:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1694 transitions, 20467 flow [2023-08-27 14:54:04,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1694 transitions, 20319 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 14:54:04,077 INFO L231 Difference]: Finished difference. Result has 218 places, 1618 transitions, 16493 flow [2023-08-27 14:54:04,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=16290, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=16493, PETRI_PLACES=218, PETRI_TRANSITIONS=1618} [2023-08-27 14:54:04,078 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 158 predicate places. [2023-08-27 14:54:04,078 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 1618 transitions, 16493 flow [2023-08-27 14:54:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 375.25) internal successors, (1501), 4 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:04,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:54:04,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:54:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 14:54:04,078 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:54:04,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:54:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 182913099, now seen corresponding path program 1 times [2023-08-27 14:54:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:54:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959743438] [2023-08-27 14:54:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:54:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:54:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:54:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 14:54:04,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:54:04,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959743438] [2023-08-27 14:54:04,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959743438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:54:04,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:54:04,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 14:54:04,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472692613] [2023-08-27 14:54:04,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:54:04,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:54:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:54:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:54:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:54:04,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 914 [2023-08-27 14:54:04,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1618 transitions, 16493 flow. Second operand has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:04,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:54:04,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 914 [2023-08-27 14:54:04,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:18,697 INFO L124 PetriNetUnfolderBase]: 27208/46985 cut-off events. [2023-08-27 14:54:18,697 INFO L125 PetriNetUnfolderBase]: For 373739/373739 co-relation queries the response was YES. [2023-08-27 14:54:19,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219892 conditions, 46985 events. 27208/46985 cut-off events. For 373739/373739 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 348895 event pairs, 5414 based on Foata normal form. 340/47325 useless extension candidates. Maximal degree in co-relation 203155. Up to 36448 conditions per place. [2023-08-27 14:54:19,509 INFO L140 encePairwiseOnDemand]: 908/914 looper letters, 1655 selfloop transitions, 14 changer transitions 0/1669 dead transitions. [2023-08-27 14:54:19,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1669 transitions, 20235 flow [2023-08-27 14:54:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:54:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:54:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1556 transitions. [2023-08-27 14:54:19,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42560175054704596 [2023-08-27 14:54:19,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1556 transitions. [2023-08-27 14:54:19,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1556 transitions. [2023-08-27 14:54:19,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:54:19,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1556 transitions. [2023-08-27 14:54:19,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:19,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:19,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:19,516 INFO L175 Difference]: Start difference. First operand has 218 places, 1618 transitions, 16493 flow. Second operand 4 states and 1556 transitions. [2023-08-27 14:54:19,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1669 transitions, 20235 flow [2023-08-27 14:54:20,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1669 transitions, 20011 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-27 14:54:20,429 INFO L231 Difference]: Finished difference. Result has 219 places, 1630 transitions, 16497 flow [2023-08-27 14:54:20,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=16285, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=16497, PETRI_PLACES=219, PETRI_TRANSITIONS=1630} [2023-08-27 14:54:20,430 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 159 predicate places. [2023-08-27 14:54:20,430 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 1630 transitions, 16497 flow [2023-08-27 14:54:20,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:20,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:54:20,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:54:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 14:54:20,431 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:54:20,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:54:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash 140114329, now seen corresponding path program 2 times [2023-08-27 14:54:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:54:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233375240] [2023-08-27 14:54:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:54:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:54:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:54:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 14:54:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:54:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233375240] [2023-08-27 14:54:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233375240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:54:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218708189] [2023-08-27 14:54:20,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:54:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:54:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:54:20,643 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:54:20,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 14:54:21,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:54:21,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:54:21,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 14:54:21,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:54:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 14:54:21,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:54:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218708189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:54:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:54:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-27 14:54:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248681168] [2023-08-27 14:54:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:54:21,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 14:54:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:54:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 14:54:21,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:54:21,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 914 [2023-08-27 14:54:21,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1630 transitions, 16497 flow. Second operand has 5 states, 5 states have (on average 382.6) internal successors, (1913), 5 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:21,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:54:21,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 914 [2023-08-27 14:54:21,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:37,195 INFO L124 PetriNetUnfolderBase]: 31622/53225 cut-off events. [2023-08-27 14:54:37,195 INFO L125 PetriNetUnfolderBase]: For 401138/401138 co-relation queries the response was YES. [2023-08-27 14:54:38,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257307 conditions, 53225 events. 31622/53225 cut-off events. For 401138/401138 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 389623 event pairs, 3348 based on Foata normal form. 1504/54729 useless extension candidates. Maximal degree in co-relation 240605. Up to 32519 conditions per place. [2023-08-27 14:54:38,191 INFO L140 encePairwiseOnDemand]: 908/914 looper letters, 1664 selfloop transitions, 44 changer transitions 0/1708 dead transitions. [2023-08-27 14:54:38,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1708 transitions, 20521 flow [2023-08-27 14:54:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 14:54:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 14:54:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2339 transitions. [2023-08-27 14:54:38,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42651349380014586 [2023-08-27 14:54:38,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2339 transitions. [2023-08-27 14:54:38,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2339 transitions. [2023-08-27 14:54:38,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:54:38,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2339 transitions. [2023-08-27 14:54:38,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 389.8333333333333) internal successors, (2339), 6 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:38,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:38,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 914.0) internal successors, (6398), 7 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:38,200 INFO L175 Difference]: Start difference. First operand has 219 places, 1630 transitions, 16497 flow. Second operand 6 states and 2339 transitions. [2023-08-27 14:54:38,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1708 transitions, 20521 flow [2023-08-27 14:54:39,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1708 transitions, 20521 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 14:54:39,320 INFO L231 Difference]: Finished difference. Result has 227 places, 1652 transitions, 16987 flow [2023-08-27 14:54:39,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=16497, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16987, PETRI_PLACES=227, PETRI_TRANSITIONS=1652} [2023-08-27 14:54:39,321 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 167 predicate places. [2023-08-27 14:54:39,321 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1652 transitions, 16987 flow [2023-08-27 14:54:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 382.6) internal successors, (1913), 5 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:54:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:54:39,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-27 14:54:39,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:54:39,523 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:54:39,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:54:39,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1183360541, now seen corresponding path program 3 times [2023-08-27 14:54:39,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:54:39,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465368995] [2023-08-27 14:54:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:54:39,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:54:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:54:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 14:54:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:54:39,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465368995] [2023-08-27 14:54:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465368995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:54:39,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:54:39,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 14:54:39,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44562456] [2023-08-27 14:54:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:54:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:54:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:54:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:54:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:54:39,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 914 [2023-08-27 14:54:39,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1652 transitions, 16987 flow. Second operand has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:39,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:54:39,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 914 [2023-08-27 14:54:39,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:59,702 INFO L124 PetriNetUnfolderBase]: 39966/65385 cut-off events. [2023-08-27 14:54:59,703 INFO L125 PetriNetUnfolderBase]: For 542575/542575 co-relation queries the response was YES. [2023-08-27 14:55:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332064 conditions, 65385 events. 39966/65385 cut-off events. For 542575/542575 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 480392 event pairs, 8040 based on Foata normal form. 992/66377 useless extension candidates. Maximal degree in co-relation 315358. Up to 40004 conditions per place. [2023-08-27 14:55:00,894 INFO L140 encePairwiseOnDemand]: 908/914 looper letters, 1693 selfloop transitions, 46 changer transitions 0/1739 dead transitions. [2023-08-27 14:55:00,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1739 transitions, 21478 flow [2023-08-27 14:55:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:55:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:55:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1941 transitions. [2023-08-27 14:55:00,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42472647702407 [2023-08-27 14:55:00,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1941 transitions. [2023-08-27 14:55:00,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1941 transitions. [2023-08-27 14:55:00,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:55:00,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1941 transitions. [2023-08-27 14:55:00,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 388.2) internal successors, (1941), 5 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:00,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:00,900 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 914.0) internal successors, (5484), 6 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:00,900 INFO L175 Difference]: Start difference. First operand has 227 places, 1652 transitions, 16987 flow. Second operand 5 states and 1941 transitions. [2023-08-27 14:55:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1739 transitions, 21478 flow [2023-08-27 14:55:03,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1739 transitions, 21264 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-27 14:55:03,560 INFO L231 Difference]: Finished difference. Result has 231 places, 1676 transitions, 17418 flow [2023-08-27 14:55:03,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=16879, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=17418, PETRI_PLACES=231, PETRI_TRANSITIONS=1676} [2023-08-27 14:55:03,561 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 171 predicate places. [2023-08-27 14:55:03,561 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 1676 transitions, 17418 flow [2023-08-27 14:55:03,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.25) internal successors, (1525), 4 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:03,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:55:03,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:55:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 14:55:03,562 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-27 14:55:03,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:55:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2104563403, now seen corresponding path program 1 times [2023-08-27 14:55:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:55:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552160127] [2023-08-27 14:55:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:55:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:55:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:55:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 14:55:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:55:03,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552160127] [2023-08-27 14:55:03,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552160127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:55:03,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652856368] [2023-08-27 14:55:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:55:03,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:55:03,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:55:03,745 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:55:03,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process