/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:48:19,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:48:19,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 09:48:19,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:48:19,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:48:19,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:48:19,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:48:19,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:48:19,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:48:19,561 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:48:19,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:48:19,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:48:19,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:48:19,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:48:19,563 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:48:19,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:48:19,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:48:19,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:48:19,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:48:19,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:48:19,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:48:19,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:48:19,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:48:19,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:48:19,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:48:19,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:48:19,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:48:19,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:48:19,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:48:19,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:48:19,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:48:19,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:48:19,569 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:48:19,569 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:48:19,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:48:19,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:48:19,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:48:19,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:48:19,796 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:48:19,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:48:20,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:48:21,033 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:48:21,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:48:21,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2695e6ac7/4b153a6b059549428b426749e8713ad0/FLAG628e7d892 [2023-12-25 09:48:21,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2695e6ac7/4b153a6b059549428b426749e8713ad0 [2023-12-25 09:48:21,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:48:21,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:48:21,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:48:21,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:48:21,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:48:21,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230bfaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21, skipping insertion in model container [2023-12-25 09:48:21,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:48:21,265 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6320,6333] [2023-12-25 09:48:21,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:48:21,312 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:48:21,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6320,6333] [2023-12-25 09:48:21,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:48:21,377 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:48:21,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21 WrapperNode [2023-12-25 09:48:21,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:48:21,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:48:21,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:48:21,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:48:21,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,438 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 551 [2023-12-25 09:48:21,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:48:21,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:48:21,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:48:21,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:48:21,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,494 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 09:48:21,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:48:21,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:48:21,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:48:21,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:48:21,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (1/1) ... [2023-12-25 09:48:21,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:48:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:48:21,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 09:48:21,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 09:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:48:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:48:21,720 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:48:21,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:48:22,129 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:48:22,164 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:48:22,164 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:48:22,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:48:22 BoogieIcfgContainer [2023-12-25 09:48:22,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:48:22,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:48:22,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:48:22,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:48:22,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:48:21" (1/3) ... [2023-12-25 09:48:22,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d872f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:48:22, skipping insertion in model container [2023-12-25 09:48:22,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:48:21" (2/3) ... [2023-12-25 09:48:22,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d872f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:48:22, skipping insertion in model container [2023-12-25 09:48:22,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:48:22" (3/3) ... [2023-12-25 09:48:22,172 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:48:22,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:48:22,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:48:22,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:48:22,229 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@63af3500, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:48:22,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:48:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.7121212121212122) internal successors, (226), 133 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-25 09:48:22,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:22,241 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:48:22,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:22,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1354348749, now seen corresponding path program 1 times [2023-12-25 09:48:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600426019] [2023-12-25 09:48:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:22,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:22,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:22,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:22,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 09:48:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:22,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:22,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:22,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:22,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600426019] [2023-12-25 09:48:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600426019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:22,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:22,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896336011] [2023-12-25 09:48:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:22,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:22,532 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.7121212121212122) internal successors, (226), 133 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:22,597 INFO L93 Difference]: Finished difference Result 318 states and 518 transitions. [2023-12-25 09:48:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-25 09:48:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:22,612 INFO L225 Difference]: With dead ends: 318 [2023-12-25 09:48:22,612 INFO L226 Difference]: Without dead ends: 214 [2023-12-25 09:48:22,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:22,619 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 173 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:22,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 496 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-25 09:48:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2023-12-25 09:48:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.5071090047393365) internal successors, (318), 211 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 318 transitions. [2023-12-25 09:48:22,660 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 318 transitions. Word has length 59 [2023-12-25 09:48:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 318 transitions. [2023-12-25 09:48:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 318 transitions. [2023-12-25 09:48:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 09:48:22,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:22,663 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:22,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 09:48:22,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:22,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1397188320, now seen corresponding path program 1 times [2023-12-25 09:48:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:22,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321506904] [2023-12-25 09:48:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:22,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:22,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:22,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:22,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 09:48:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:22,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:22,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:23,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:23,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321506904] [2023-12-25 09:48:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321506904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:23,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059699823] [2023-12-25 09:48:23,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,015 INFO L87 Difference]: Start difference. First operand 212 states and 318 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:23,032 INFO L93 Difference]: Finished difference Result 536 states and 834 transitions. [2023-12-25 09:48:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:23,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-25 09:48:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:23,035 INFO L225 Difference]: With dead ends: 536 [2023-12-25 09:48:23,035 INFO L226 Difference]: Without dead ends: 358 [2023-12-25 09:48:23,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,036 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:23,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-12-25 09:48:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2023-12-25 09:48:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.5408450704225352) internal successors, (547), 355 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 547 transitions. [2023-12-25 09:48:23,048 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 547 transitions. Word has length 60 [2023-12-25 09:48:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 547 transitions. [2023-12-25 09:48:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 547 transitions. [2023-12-25 09:48:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 09:48:23,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:23,050 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:23,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:23,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:23,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:23,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash 628843804, now seen corresponding path program 1 times [2023-12-25 09:48:23,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:23,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235818319] [2023-12-25 09:48:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:23,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:23,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:23,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 09:48:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:23,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:23,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:23,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:23,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235818319] [2023-12-25 09:48:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235818319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:23,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329324129] [2023-12-25 09:48:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:23,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,370 INFO L87 Difference]: Start difference. First operand 356 states and 547 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:23,390 INFO L93 Difference]: Finished difference Result 936 states and 1469 transitions. [2023-12-25 09:48:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-25 09:48:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:23,393 INFO L225 Difference]: With dead ends: 936 [2023-12-25 09:48:23,393 INFO L226 Difference]: Without dead ends: 614 [2023-12-25 09:48:23,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,395 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 134 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:23,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-25 09:48:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 612. [2023-12-25 09:48:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.5564648117839608) internal successors, (951), 611 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 951 transitions. [2023-12-25 09:48:23,410 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 951 transitions. Word has length 61 [2023-12-25 09:48:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:23,410 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 951 transitions. [2023-12-25 09:48:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 951 transitions. [2023-12-25 09:48:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-25 09:48:23,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:23,412 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:23,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:23,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:23,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:23,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash -325451437, now seen corresponding path program 1 times [2023-12-25 09:48:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314497158] [2023-12-25 09:48:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:23,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:23,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:23,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 09:48:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:23,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:23,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:23,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:23,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:23,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314497158] [2023-12-25 09:48:23,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314497158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557798905] [2023-12-25 09:48:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:23,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:23,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,746 INFO L87 Difference]: Start difference. First operand 612 states and 951 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:23,765 INFO L93 Difference]: Finished difference Result 1640 states and 2577 transitions. [2023-12-25 09:48:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-25 09:48:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:23,770 INFO L225 Difference]: With dead ends: 1640 [2023-12-25 09:48:23,770 INFO L226 Difference]: Without dead ends: 1062 [2023-12-25 09:48:23,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:23,775 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:23,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-25 09:48:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2023-12-25 09:48:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.559017941454202) internal successors, (1651), 1059 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1651 transitions. [2023-12-25 09:48:23,801 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1651 transitions. Word has length 62 [2023-12-25 09:48:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:23,802 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1651 transitions. [2023-12-25 09:48:23,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1651 transitions. [2023-12-25 09:48:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:48:23,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:23,808 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:23,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:24,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:24,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1114318617, now seen corresponding path program 1 times [2023-12-25 09:48:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:24,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665875800] [2023-12-25 09:48:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:24,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:24,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:24,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 09:48:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:24,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:24,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:24,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:24,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665875800] [2023-12-25 09:48:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665875800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094240757] [2023-12-25 09:48:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:24,149 INFO L87 Difference]: Start difference. First operand 1060 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:24,169 INFO L93 Difference]: Finished difference Result 2856 states and 4469 transitions. [2023-12-25 09:48:24,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:24,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-25 09:48:24,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:24,174 INFO L225 Difference]: With dead ends: 2856 [2023-12-25 09:48:24,174 INFO L226 Difference]: Without dead ends: 1830 [2023-12-25 09:48:24,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:24,176 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:24,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 396 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2023-12-25 09:48:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1828. [2023-12-25 09:48:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 1.5517241379310345) internal successors, (2835), 1827 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2835 transitions. [2023-12-25 09:48:24,204 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2835 transitions. Word has length 63 [2023-12-25 09:48:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:24,204 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2835 transitions. [2023-12-25 09:48:24,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2835 transitions. [2023-12-25 09:48:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 09:48:24,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:24,205 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:24,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:24,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:24,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:24,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -56225382, now seen corresponding path program 1 times [2023-12-25 09:48:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:24,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939828284] [2023-12-25 09:48:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:24,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:24,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:24,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:24,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 09:48:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:24,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:48:24,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:24,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:24,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939828284] [2023-12-25 09:48:24,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939828284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:24,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:24,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 09:48:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039802781] [2023-12-25 09:48:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:24,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 09:48:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 09:48:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 09:48:24,671 INFO L87 Difference]: Start difference. First operand 1828 states and 2835 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:24,815 INFO L93 Difference]: Finished difference Result 9438 states and 14600 transitions. [2023-12-25 09:48:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 09:48:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-25 09:48:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:24,840 INFO L225 Difference]: With dead ends: 9438 [2023-12-25 09:48:24,840 INFO L226 Difference]: Without dead ends: 7644 [2023-12-25 09:48:24,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 09:48:24,846 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 717 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:24,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1119 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:48:24,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7644 states. [2023-12-25 09:48:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7644 to 7636. [2023-12-25 09:48:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.5406679764243616) internal successors, (11763), 7635 states have internal predecessors, (11763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 11763 transitions. [2023-12-25 09:48:24,987 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 11763 transitions. Word has length 64 [2023-12-25 09:48:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:24,988 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 11763 transitions. [2023-12-25 09:48:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 11763 transitions. [2023-12-25 09:48:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 09:48:24,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:24,989 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:24,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:25,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:25,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2018858481, now seen corresponding path program 1 times [2023-12-25 09:48:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:25,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747790180] [2023-12-25 09:48:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:25,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:25,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 09:48:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:25,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:48:25,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:25,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:25,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:25,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747790180] [2023-12-25 09:48:25,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747790180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:25,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:25,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:48:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369007610] [2023-12-25 09:48:25,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:48:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:48:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:48:25,592 INFO L87 Difference]: Start difference. First operand 7636 states and 11763 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:25,861 INFO L93 Difference]: Finished difference Result 21512 states and 33189 transitions. [2023-12-25 09:48:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:48:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-25 09:48:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:25,903 INFO L225 Difference]: With dead ends: 21512 [2023-12-25 09:48:25,903 INFO L226 Difference]: Without dead ends: 13910 [2023-12-25 09:48:25,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:48:25,917 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 488 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:25,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 210 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:48:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13910 states. [2023-12-25 09:48:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13910 to 13908. [2023-12-25 09:48:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13908 states, 13907 states have (on average 1.5326813834759474) internal successors, (21315), 13907 states have internal predecessors, (21315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13908 states to 13908 states and 21315 transitions. [2023-12-25 09:48:26,143 INFO L78 Accepts]: Start accepts. Automaton has 13908 states and 21315 transitions. Word has length 66 [2023-12-25 09:48:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:26,143 INFO L495 AbstractCegarLoop]: Abstraction has 13908 states and 21315 transitions. [2023-12-25 09:48:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13908 states and 21315 transitions. [2023-12-25 09:48:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 09:48:26,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:26,144 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:26,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:26,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:26,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:26,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash -658603924, now seen corresponding path program 1 times [2023-12-25 09:48:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073063890] [2023-12-25 09:48:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:26,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:26,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:26,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 09:48:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:26,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:48:26,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:26,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:26,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073063890] [2023-12-25 09:48:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073063890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 09:48:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459248381] [2023-12-25 09:48:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 09:48:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 09:48:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 09:48:26,985 INFO L87 Difference]: Start difference. First operand 13908 states and 21315 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:27,292 INFO L93 Difference]: Finished difference Result 73984 states and 113545 transitions. [2023-12-25 09:48:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 09:48:27,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-25 09:48:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:27,418 INFO L225 Difference]: With dead ends: 73984 [2023-12-25 09:48:27,418 INFO L226 Difference]: Without dead ends: 60110 [2023-12-25 09:48:27,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 09:48:27,447 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 980 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:27,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1059 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:48:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60110 states. [2023-12-25 09:48:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60110 to 27780. [2023-12-25 09:48:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27780 states, 27779 states have (on average 1.5126174448324274) internal successors, (42019), 27779 states have internal predecessors, (42019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27780 states to 27780 states and 42019 transitions. [2023-12-25 09:48:28,116 INFO L78 Accepts]: Start accepts. Automaton has 27780 states and 42019 transitions. Word has length 66 [2023-12-25 09:48:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:28,116 INFO L495 AbstractCegarLoop]: Abstraction has 27780 states and 42019 transitions. [2023-12-25 09:48:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27780 states and 42019 transitions. [2023-12-25 09:48:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:48:28,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:28,117 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:28,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:28,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:28,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:28,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1038658596, now seen corresponding path program 1 times [2023-12-25 09:48:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292919290] [2023-12-25 09:48:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:28,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:28,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:28,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 09:48:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:28,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:48:28,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:28,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:28,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292919290] [2023-12-25 09:48:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292919290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:48:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829033542] [2023-12-25 09:48:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:28,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:48:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:48:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:48:28,562 INFO L87 Difference]: Start difference. First operand 27780 states and 42019 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:28,785 INFO L93 Difference]: Finished difference Result 56678 states and 85156 transitions. [2023-12-25 09:48:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:48:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-25 09:48:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:28,869 INFO L225 Difference]: With dead ends: 56678 [2023-12-25 09:48:28,870 INFO L226 Difference]: Without dead ends: 56676 [2023-12-25 09:48:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:48:28,887 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 300 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:28,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56676 states. [2023-12-25 09:48:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56676 to 28932. [2023-12-25 09:48:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28932 states, 28931 states have (on average 1.4922055926169162) internal successors, (43171), 28931 states have internal predecessors, (43171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28932 states to 28932 states and 43171 transitions. [2023-12-25 09:48:29,422 INFO L78 Accepts]: Start accepts. Automaton has 28932 states and 43171 transitions. Word has length 67 [2023-12-25 09:48:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:29,422 INFO L495 AbstractCegarLoop]: Abstraction has 28932 states and 43171 transitions. [2023-12-25 09:48:29,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 28932 states and 43171 transitions. [2023-12-25 09:48:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:48:29,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:29,423 INFO L195 NwaCegarLoop]: 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, 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] [2023-12-25 09:48:29,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:29,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:29,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2144218492, now seen corresponding path program 1 times [2023-12-25 09:48:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147595229] [2023-12-25 09:48:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:29,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:29,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:29,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:29,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 09:48:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:29,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:48:29,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:29,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:29,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147595229] [2023-12-25 09:48:29,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147595229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:29,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:29,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:48:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107861411] [2023-12-25 09:48:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:29,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:48:29,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:48:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:29,857 INFO L87 Difference]: Start difference. First operand 28932 states and 43171 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:30,074 INFO L93 Difference]: Finished difference Result 65146 states and 97015 transitions. [2023-12-25 09:48:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:48:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-25 09:48:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:30,123 INFO L225 Difference]: With dead ends: 65146 [2023-12-25 09:48:30,123 INFO L226 Difference]: Without dead ends: 36248 [2023-12-25 09:48:30,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:48:30,153 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 112 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:30,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 383 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:48:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36248 states. [2023-12-25 09:48:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36248 to 36246. [2023-12-25 09:48:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36246 states, 36245 states have (on average 1.4824941371223617) internal successors, (53733), 36245 states have internal predecessors, (53733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36246 states to 36246 states and 53733 transitions. [2023-12-25 09:48:30,707 INFO L78 Accepts]: Start accepts. Automaton has 36246 states and 53733 transitions. Word has length 68 [2023-12-25 09:48:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:30,707 INFO L495 AbstractCegarLoop]: Abstraction has 36246 states and 53733 transitions. [2023-12-25 09:48:30,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 36246 states and 53733 transitions. [2023-12-25 09:48:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:48:30,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:30,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:48:30,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-25 09:48:30,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:30,922 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:30,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1935765327, now seen corresponding path program 1 times [2023-12-25 09:48:30,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:30,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624798213] [2023-12-25 09:48:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:30,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:30,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:30,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:30,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 09:48:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:30,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:48:31,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:31,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:48:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:31,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:31,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624798213] [2023-12-25 09:48:31,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624798213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:48:31,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:48:31,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:48:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325894284] [2023-12-25 09:48:31,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:48:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:48:31,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:48:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:48:31,823 INFO L87 Difference]: Start difference. First operand 36246 states and 53733 transitions. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:40,144 INFO L93 Difference]: Finished difference Result 376584 states and 551573 transitions. [2023-12-25 09:48:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-25 09:48:40,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:48:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:40,659 INFO L225 Difference]: With dead ends: 376584 [2023-12-25 09:48:40,660 INFO L226 Difference]: Without dead ends: 340374 [2023-12-25 09:48:40,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4696 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-25 09:48:40,847 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 5921 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5921 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:40,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5921 Valid, 3389 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2806 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 09:48:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340374 states. [2023-12-25 09:48:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340374 to 45270. [2023-12-25 09:48:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45270 states, 45269 states have (on average 1.4670745985111224) internal successors, (66413), 45269 states have internal predecessors, (66413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45270 states to 45270 states and 66413 transitions. [2023-12-25 09:48:43,044 INFO L78 Accepts]: Start accepts. Automaton has 45270 states and 66413 transitions. Word has length 93 [2023-12-25 09:48:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:43,044 INFO L495 AbstractCegarLoop]: Abstraction has 45270 states and 66413 transitions. [2023-12-25 09:48:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 45270 states and 66413 transitions. [2023-12-25 09:48:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:48:43,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:43,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:48:43,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 09:48:43,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:43,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:43,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:43,261 INFO L85 PathProgramCache]: Analyzing trace with hash -281131206, now seen corresponding path program 1 times [2023-12-25 09:48:43,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:43,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069683862] [2023-12-25 09:48:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:43,263 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:43,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 09:48:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:43,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:48:43,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 09:48:43,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:48:43,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069683862] [2023-12-25 09:48:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069683862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:48:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:48:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:48:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062006814] [2023-12-25 09:48:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:48:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:48:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:48:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:48:43,528 INFO L87 Difference]: Start difference. First operand 45270 states and 66413 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:44,147 INFO L93 Difference]: Finished difference Result 134938 states and 198045 transitions. [2023-12-25 09:48:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:48:44,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:48:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:44,257 INFO L225 Difference]: With dead ends: 134938 [2023-12-25 09:48:44,257 INFO L226 Difference]: Without dead ends: 89704 [2023-12-25 09:48:44,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:48:44,290 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 634 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:44,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 218 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:48:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89704 states. [2023-12-25 09:48:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89704 to 89702. [2023-12-25 09:48:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89702 states, 89701 states have (on average 1.4586570941238113) internal successors, (130843), 89701 states have internal predecessors, (130843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89702 states to 89702 states and 130843 transitions. [2023-12-25 09:48:45,619 INFO L78 Accepts]: Start accepts. Automaton has 89702 states and 130843 transitions. Word has length 93 [2023-12-25 09:48:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:48:45,619 INFO L495 AbstractCegarLoop]: Abstraction has 89702 states and 130843 transitions. [2023-12-25 09:48:45,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 89702 states and 130843 transitions. [2023-12-25 09:48:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:48:45,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:48:45,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:48:45,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-25 09:48:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:45,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:48:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:48:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -203385995, now seen corresponding path program 1 times [2023-12-25 09:48:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:48:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346712832] [2023-12-25 09:48:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:48:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:48:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:48:45,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:48:45,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 09:48:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:48:45,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:48:45,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:48:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:46,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:48:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:48:46,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:48:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346712832] [2023-12-25 09:48:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346712832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:48:46,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:48:46,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:48:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171303837] [2023-12-25 09:48:46,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:48:46,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:48:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:48:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:48:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:48:46,769 INFO L87 Difference]: Start difference. First operand 89702 states and 130843 transitions. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:48:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:48:56,585 INFO L93 Difference]: Finished difference Result 796906 states and 1150363 transitions. [2023-12-25 09:48:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-25 09:48:56,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:48:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:48:57,982 INFO L225 Difference]: With dead ends: 796906 [2023-12-25 09:48:57,982 INFO L226 Difference]: Without dead ends: 707248 [2023-12-25 09:48:58,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4667 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-25 09:48:58,098 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 4758 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-25 09:48:58,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 4073 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-25 09:48:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707248 states. [2023-12-25 09:49:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707248 to 103334. [2023-12-25 09:49:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103334 states, 103333 states have (on average 1.4481627360088258) internal successors, (149643), 103333 states have internal predecessors, (149643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103334 states to 103334 states and 149643 transitions. [2023-12-25 09:49:03,629 INFO L78 Accepts]: Start accepts. Automaton has 103334 states and 149643 transitions. Word has length 93 [2023-12-25 09:49:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:49:03,629 INFO L495 AbstractCegarLoop]: Abstraction has 103334 states and 149643 transitions. [2023-12-25 09:49:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 103334 states and 149643 transitions. [2023-12-25 09:49:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:49:03,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:49:03,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:49:03,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 09:49:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:03,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:49:03,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:49:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash -955032052, now seen corresponding path program 1 times [2023-12-25 09:49:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:49:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13288236] [2023-12-25 09:49:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:49:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:49:03,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:49:03,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 09:49:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:49:03,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:49:03,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:49:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 09:49:04,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:49:04,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:49:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13288236] [2023-12-25 09:49:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13288236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:49:04,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:49:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:49:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465586047] [2023-12-25 09:49:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:49:04,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:49:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:49:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:49:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:49:04,398 INFO L87 Difference]: Start difference. First operand 103334 states and 149643 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:49:05,380 INFO L93 Difference]: Finished difference Result 309914 states and 448837 transitions. [2023-12-25 09:49:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:49:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:49:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:49:05,706 INFO L225 Difference]: With dead ends: 309914 [2023-12-25 09:49:05,707 INFO L226 Difference]: Without dead ends: 206624 [2023-12-25 09:49:05,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:49:05,767 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 470 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:49:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 226 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:49:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206624 states. [2023-12-25 09:49:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206624 to 206622. [2023-12-25 09:49:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206622 states, 206621 states have (on average 1.4409909931710716) internal successors, (297739), 206621 states have internal predecessors, (297739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206622 states to 206622 states and 297739 transitions. [2023-12-25 09:49:09,249 INFO L78 Accepts]: Start accepts. Automaton has 206622 states and 297739 transitions. Word has length 93 [2023-12-25 09:49:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:49:09,249 INFO L495 AbstractCegarLoop]: Abstraction has 206622 states and 297739 transitions. [2023-12-25 09:49:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 206622 states and 297739 transitions. [2023-12-25 09:49:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:49:09,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:49:09,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:49:09,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 09:49:09,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:09,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:49:09,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:49:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2030364431, now seen corresponding path program 1 times [2023-12-25 09:49:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:49:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882805237] [2023-12-25 09:49:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:49:09,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:49:09,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:49:09,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 09:49:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:49:09,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:49:09,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:49:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:49:10,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:49:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:49:10,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:49:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882805237] [2023-12-25 09:49:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882805237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:49:10,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:49:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:49:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503567766] [2023-12-25 09:49:10,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:49:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:49:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:49:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:49:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:49:10,384 INFO L87 Difference]: Start difference. First operand 206622 states and 297739 transitions. Second operand has 16 states, 16 states have (on average 10.875) internal successors, (174), 15 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:49:22,990 INFO L93 Difference]: Finished difference Result 1495950 states and 2134511 transitions. [2023-12-25 09:49:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-25 09:49:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 15 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:49:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:49:25,744 INFO L225 Difference]: With dead ends: 1495950 [2023-12-25 09:49:25,744 INFO L226 Difference]: Without dead ends: 1289372 [2023-12-25 09:49:26,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4669 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-25 09:49:26,047 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 4048 mSDsluCounter, 4028 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4048 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 09:49:26,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4048 Valid, 4514 Invalid, 3876 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 09:49:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289372 states. [2023-12-25 09:49:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289372 to 228932. [2023-12-25 09:49:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228932 states, 228931 states have (on average 1.4337900939584416) internal successors, (328239), 228931 states have internal predecessors, (328239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228932 states to 228932 states and 328239 transitions. [2023-12-25 09:49:38,048 INFO L78 Accepts]: Start accepts. Automaton has 228932 states and 328239 transitions. Word has length 93 [2023-12-25 09:49:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:49:38,048 INFO L495 AbstractCegarLoop]: Abstraction has 228932 states and 328239 transitions. [2023-12-25 09:49:38,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 15 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 228932 states and 328239 transitions. [2023-12-25 09:49:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:49:38,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:49:38,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:49:38,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 09:49:38,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:38,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:49:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:49:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 101507386, now seen corresponding path program 1 times [2023-12-25 09:49:38,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:49:38,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193648060] [2023-12-25 09:49:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:49:38,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:49:38,276 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:49:38,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 09:49:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:49:38,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:49:38,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:49:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 09:49:38,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:49:38,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:49:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193648060] [2023-12-25 09:49:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193648060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:49:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:49:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:49:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70790980] [2023-12-25 09:49:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:49:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:49:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:49:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:49:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:49:38,860 INFO L87 Difference]: Start difference. First operand 228932 states and 328239 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:49:41,191 INFO L93 Difference]: Finished difference Result 686708 states and 984625 transitions. [2023-12-25 09:49:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:49:41,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:49:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:49:42,407 INFO L225 Difference]: With dead ends: 686708 [2023-12-25 09:49:42,407 INFO L226 Difference]: Without dead ends: 457820 [2023-12-25 09:49:42,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:49:42,508 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 461 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:49:42,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 234 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:49:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457820 states. [2023-12-25 09:49:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457820 to 457818. [2023-12-25 09:49:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457818 states, 457817 states have (on average 1.4280356561682943) internal successors, (653779), 457817 states have internal predecessors, (653779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457818 states to 457818 states and 653779 transitions. [2023-12-25 09:49:49,912 INFO L78 Accepts]: Start accepts. Automaton has 457818 states and 653779 transitions. Word has length 93 [2023-12-25 09:49:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:49:49,913 INFO L495 AbstractCegarLoop]: Abstraction has 457818 states and 653779 transitions. [2023-12-25 09:49:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:49:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 457818 states and 653779 transitions. [2023-12-25 09:49:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:49:49,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:49:49,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:49:49,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 09:49:50,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:50,134 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:49:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:49:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash 687549237, now seen corresponding path program 1 times [2023-12-25 09:49:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:49:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857640341] [2023-12-25 09:49:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:49:50,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:49:50,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:49:50,136 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:49:50,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 09:49:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:49:50,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:49:50,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:49:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:49:50,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:49:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:49:50,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:49:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857640341] [2023-12-25 09:49:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857640341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:49:50,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:49:50,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:49:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809377971] [2023-12-25 09:49:50,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:49:50,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:49:50,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:49:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:49:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:49:50,859 INFO L87 Difference]: Start difference. First operand 457818 states and 653779 transitions. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:50:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:50:06,268 INFO L93 Difference]: Finished difference Result 2559362 states and 3619947 transitions. [2023-12-25 09:50:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-25 09:50:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:50:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:50:11,389 INFO L225 Difference]: With dead ends: 2559362 [2023-12-25 09:50:11,389 INFO L226 Difference]: Without dead ends: 2101588 [2023-12-25 09:50:12,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4659 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-25 09:50:12,201 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 4294 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:50:12,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4294 Valid, 3068 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 09:50:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101588 states. [2023-12-25 09:50:31,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101588 to 486144. [2023-12-25 09:50:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486144 states, 486143 states have (on average 1.4227850652997163) internal successors, (691677), 486143 states have internal predecessors, (691677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:50:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486144 states to 486144 states and 691677 transitions. [2023-12-25 09:50:33,435 INFO L78 Accepts]: Start accepts. Automaton has 486144 states and 691677 transitions. Word has length 93 [2023-12-25 09:50:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:50:33,435 INFO L495 AbstractCegarLoop]: Abstraction has 486144 states and 691677 transitions. [2023-12-25 09:50:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:50:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 486144 states and 691677 transitions. [2023-12-25 09:50:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:50:33,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:50:33,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:50:33,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 09:50:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:50:33,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:50:33,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:50:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash 679754764, now seen corresponding path program 1 times [2023-12-25 09:50:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:50:33,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979051562] [2023-12-25 09:50:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:50:33,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:50:33,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:50:33,670 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:50:33,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 09:50:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:50:33,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:50:33,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:50:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 09:50:34,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:50:34,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:50:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979051562] [2023-12-25 09:50:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979051562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:50:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:50:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:50:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835007990] [2023-12-25 09:50:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:50:34,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:50:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:50:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:50:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:50:34,358 INFO L87 Difference]: Start difference. First operand 486144 states and 691677 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:50:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:50:40,002 INFO L93 Difference]: Finished difference Result 1458344 states and 2074939 transitions. [2023-12-25 09:50:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:50:40,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-25 09:50:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:50:42,473 INFO L225 Difference]: With dead ends: 1458344 [2023-12-25 09:50:42,473 INFO L226 Difference]: Without dead ends: 972244 [2023-12-25 09:50:42,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:50:42,749 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 739 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:50:42,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 242 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:50:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972244 states. [2023-12-25 09:50:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972244 to 972242. [2023-12-25 09:50:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972242 states, 972241 states have (on average 1.4184723746478496) internal successors, (1379097), 972241 states have internal predecessors, (1379097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972242 states to 972242 states and 1379097 transitions. [2023-12-25 09:51:00,469 INFO L78 Accepts]: Start accepts. Automaton has 972242 states and 1379097 transitions. Word has length 93 [2023-12-25 09:51:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:00,471 INFO L495 AbstractCegarLoop]: Abstraction has 972242 states and 1379097 transitions. [2023-12-25 09:51:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 972242 states and 1379097 transitions. [2023-12-25 09:51:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:51:00,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:00,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:00,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:00,784 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 176709937, now seen corresponding path program 1 times [2023-12-25 09:51:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774492899] [2023-12-25 09:51:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:00,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:00,786 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:00,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 09:51:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:00,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:00,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:01,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:51:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:01,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:01,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774492899] [2023-12-25 09:51:01,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774492899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:51:01,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:51:01,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:51:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432201204] [2023-12-25 09:51:01,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:51:01,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:51:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:51:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:51:01,828 INFO L87 Difference]: Start difference. First operand 972242 states and 1379097 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 15 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)