/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/eca-rers2018/Problem13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 18:04:54,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 18:04:54,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 18:04:54,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 18:04:54,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 18:04:54,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 18:04:54,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 18:04:54,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 18:04:54,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 18:04:54,832 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 18:04:54,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 18:04:54,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 18:04:54,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 18:04:54,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 18:04:54,835 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 18:04:54,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 18:04:54,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 18:04:54,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 18:04:54,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 18:04:54,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 18:04:54,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 18:04:54,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 18:04:54,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 18:04:54,837 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 18:04:54,838 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 18:04:54,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 18:04:54,838 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 18:04:54,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 18:04:54,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 18:04:54,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 18:04:54,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 18:04:54,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 18:04:54,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 18:04:54,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 18:04:54,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 18:04:54,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 18:04:54,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 18:04:54,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 18:04:54,841 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 18:04:54,841 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 18:04:54,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 18:04:54,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 18:04:54,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 18:04:54,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 18:04:54,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 18:04:54,843 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 18:04:54,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 18:04:55,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 18:04:55,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 18:04:55,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 18:04:55,110 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 18:04:55,111 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 18:04:55,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2018/Problem13.c [2023-12-22 18:04:56,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 18:04:57,514 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 18:04:57,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem13.c [2023-12-22 18:04:57,692 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c12de700/19305d7073d2417f9ed709ed83c0064d/FLAG074df9fd6 [2023-12-22 18:04:57,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c12de700/19305d7073d2417f9ed709ed83c0064d [2023-12-22 18:04:57,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 18:04:57,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 18:04:57,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 18:04:57,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 18:04:57,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 18:04:57,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:57" (1/1) ... [2023-12-22 18:04:57,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a53ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:57, skipping insertion in model container [2023-12-22 18:04:57,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:57" (1/1) ... [2023-12-22 18:04:58,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 18:04:58,816 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem13.c[778,791] [2023-12-22 18:04:58,859 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem13.c[817,830] [2023-12-22 18:05:15,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 18:05:15,633 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 18:05:15,652 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem13.c[778,791] [2023-12-22 18:05:15,653 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem13.c[817,830] [2023-12-22 18:05:16,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 18:05:18,084 INFO L206 MainTranslator]: Completed translation [2023-12-22 18:05:18,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18 WrapperNode [2023-12-22 18:05:18,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 18:05:18,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 18:05:18,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 18:05:18,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 18:05:18,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:18,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:20,615 INFO L138 Inliner]: procedures = 710, calls = 701, calls flagged for inlining = 597, calls inlined = 597, statements flattened = 108769 [2023-12-22 18:05:20,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 18:05:20,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 18:05:20,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 18:05:20,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 18:05:20,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:20,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:20,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:21,260 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]. [2023-12-22 18:05:21,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:21,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:21,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:22,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:22,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:22,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:22,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 18:05:22,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 18:05:22,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 18:05:22,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 18:05:22,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (1/1) ... [2023-12-22 18:05:22,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 18:05:22,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 18:05:22,934 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) [2023-12-22 18:05:22,955 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 [2023-12-22 18:05:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 18:05:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 18:05:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 18:05:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 18:05:22,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2023-12-22 18:05:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2023-12-22 18:05:22,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2023-12-22 18:05:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2023-12-22 18:05:23,273 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 18:05:23,275 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 18:05:48,142 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 18:05:48,340 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 18:05:48,340 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 18:05:48,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:05:48 BoogieIcfgContainer [2023-12-22 18:05:48,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 18:05:48,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 18:05:48,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 18:05:48,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 18:05:48,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:04:57" (1/3) ... [2023-12-22 18:05:48,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a20e423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:05:48, skipping insertion in model container [2023-12-22 18:05:48,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:05:18" (2/3) ... [2023-12-22 18:05:48,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a20e423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:05:48, skipping insertion in model container [2023-12-22 18:05:48,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:05:48" (3/3) ... [2023-12-22 18:05:48,366 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13.c [2023-12-22 18:05:48,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 18:05:48,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 18:05:48,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 18:05:48,574 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;@17e3285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 18:05:48,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 18:05:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 3528 states, 3423 states have (on average 1.8258837277242186) internal successors, (6250), 3425 states have internal predecessors, (6250), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-22 18:05:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-22 18:05:48,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:05:48,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:05:48,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:05:48,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:05:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 990205398, now seen corresponding path program 1 times [2023-12-22 18:05:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:05:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347874928] [2023-12-22 18:05:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:05:48,630 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 [2023-12-22 18:05:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:05:48,632 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) [2023-12-22 18:05:48,704 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 [2023-12-22 18:05:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:05:49,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:05:49,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:05:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:05:49,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:05:49,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:05:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347874928] [2023-12-22 18:05:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347874928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:05:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:05:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:05:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015240653] [2023-12-22 18:05:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:05:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:05:49,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:05:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:05:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:05:49,266 INFO L87 Difference]: Start difference. First operand has 3528 states, 3423 states have (on average 1.8258837277242186) internal successors, (6250), 3425 states have internal predecessors, (6250), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:12,446 INFO L93 Difference]: Finished difference Result 9545 states and 17562 transitions. [2023-12-22 18:06:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:06:12,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-22 18:06:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:12,486 INFO L225 Difference]: With dead ends: 9545 [2023-12-22 18:06:12,486 INFO L226 Difference]: Without dead ends: 6012 [2023-12-22 18:06:12,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:06:12,501 INFO L413 NwaCegarLoop]: 6276 mSDtfsCounter, 3161 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 13271 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 10180 SdHoareTripleChecker+Invalid, 13883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 13271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:12,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 10180 Invalid, 13883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [612 Valid, 13271 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2023-12-22 18:06:12,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2023-12-22 18:06:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 5242. [2023-12-22 18:06:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5140 states have (on average 1.7846303501945526) internal successors, (9173), 5239 states have internal predecessors, (9173), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 9273 transitions. [2023-12-22 18:06:12,748 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 9273 transitions. Word has length 12 [2023-12-22 18:06:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:12,748 INFO L495 AbstractCegarLoop]: Abstraction has 5242 states and 9273 transitions. [2023-12-22 18:06:12,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 9273 transitions. [2023-12-22 18:06:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-22 18:06:12,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:12,753 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] [2023-12-22 18:06:12,759 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 [2023-12-22 18:06:12,961 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 [2023-12-22 18:06:12,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1807079401, now seen corresponding path program 1 times [2023-12-22 18:06:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:12,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251668263] [2023-12-22 18:06:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:12,963 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 [2023-12-22 18:06:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:12,965 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) [2023-12-22 18:06:12,998 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 [2023-12-22 18:06:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:13,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:06:13,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:13,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:13,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251668263] [2023-12-22 18:06:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251668263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:13,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:06:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978281312] [2023-12-22 18:06:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:13,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:06:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:06:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:06:13,612 INFO L87 Difference]: Start difference. First operand 5242 states and 9273 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:33,461 INFO L93 Difference]: Finished difference Result 12240 states and 21616 transitions. [2023-12-22 18:06:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:06:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-22 18:06:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:33,489 INFO L225 Difference]: With dead ends: 12240 [2023-12-22 18:06:33,489 INFO L226 Difference]: Without dead ends: 6999 [2023-12-22 18:06:33,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:06:33,500 INFO L413 NwaCegarLoop]: 7234 mSDtfsCounter, 1711 mSDsluCounter, 4263 mSDsCounter, 0 mSdLazyCounter, 10742 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 11497 SdHoareTripleChecker+Invalid, 10970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 10742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:33,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 11497 Invalid, 10970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 10742 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2023-12-22 18:06:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2023-12-22 18:06:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6720. [2023-12-22 18:06:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6720 states, 6618 states have (on average 1.7410093683892414) internal successors, (11522), 6717 states have internal predecessors, (11522), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11622 transitions. [2023-12-22 18:06:33,680 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 11622 transitions. Word has length 21 [2023-12-22 18:06:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:33,680 INFO L495 AbstractCegarLoop]: Abstraction has 6720 states and 11622 transitions. [2023-12-22 18:06:33,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 11622 transitions. [2023-12-22 18:06:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-22 18:06:33,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:33,683 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] [2023-12-22 18:06:33,689 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 [2023-12-22 18:06:33,888 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 [2023-12-22 18:06:33,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash 335599713, now seen corresponding path program 1 times [2023-12-22 18:06:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943883520] [2023-12-22 18:06:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:33,895 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 [2023-12-22 18:06:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:33,902 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) [2023-12-22 18:06:33,909 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 [2023-12-22 18:06:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:34,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:06:34,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:34,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:34,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943883520] [2023-12-22 18:06:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943883520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:34,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:06:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830565321] [2023-12-22 18:06:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:34,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:06:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:06:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:34,241 INFO L87 Difference]: Start difference. First operand 6720 states and 11622 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:34,716 INFO L93 Difference]: Finished difference Result 19591 states and 33905 transitions. [2023-12-22 18:06:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:06:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-22 18:06:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:34,775 INFO L225 Difference]: With dead ends: 19591 [2023-12-22 18:06:34,776 INFO L226 Difference]: Without dead ends: 12872 [2023-12-22 18:06:34,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:34,797 INFO L413 NwaCegarLoop]: 6431 mSDtfsCounter, 6054 mSDsluCounter, 6148 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:34,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6054 Valid, 12579 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 18:06:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2023-12-22 18:06:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 12772. [2023-12-22 18:06:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12772 states, 12670 states have (on average 1.7403314917127073) internal successors, (22050), 12769 states have internal predecessors, (22050), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12772 states to 12772 states and 22150 transitions. [2023-12-22 18:06:35,157 INFO L78 Accepts]: Start accepts. Automaton has 12772 states and 22150 transitions. Word has length 31 [2023-12-22 18:06:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:35,158 INFO L495 AbstractCegarLoop]: Abstraction has 12772 states and 22150 transitions. [2023-12-22 18:06:35,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12772 states and 22150 transitions. [2023-12-22 18:06:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-22 18:06:35,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:35,160 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] [2023-12-22 18:06:35,167 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 [2023-12-22 18:06:35,365 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 [2023-12-22 18:06:35,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:35,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:35,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1588360543, now seen corresponding path program 1 times [2023-12-22 18:06:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:35,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214586901] [2023-12-22 18:06:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:35,367 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 [2023-12-22 18:06:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:35,387 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) [2023-12-22 18:06:35,429 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 [2023-12-22 18:06:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:35,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:06:35,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:35,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:35,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214586901] [2023-12-22 18:06:35,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214586901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:35,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:35,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:06:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118668974] [2023-12-22 18:06:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:35,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:06:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:06:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:35,809 INFO L87 Difference]: Start difference. First operand 12772 states and 22150 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:36,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:36,238 INFO L93 Difference]: Finished difference Result 38271 states and 66381 transitions. [2023-12-22 18:06:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:06:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-22 18:06:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:36,302 INFO L225 Difference]: With dead ends: 38271 [2023-12-22 18:06:36,302 INFO L226 Difference]: Without dead ends: 25500 [2023-12-22 18:06:36,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:36,333 INFO L413 NwaCegarLoop]: 6301 mSDtfsCounter, 6174 mSDsluCounter, 6211 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6174 SdHoareTripleChecker+Valid, 12512 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:36,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6174 Valid, 12512 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 18:06:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25500 states. [2023-12-22 18:06:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25500 to 25397. [2023-12-22 18:06:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25397 states, 25295 states have (on average 1.7399881399486063) internal successors, (44013), 25394 states have internal predecessors, (44013), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25397 states to 25397 states and 44113 transitions. [2023-12-22 18:06:36,783 INFO L78 Accepts]: Start accepts. Automaton has 25397 states and 44113 transitions. Word has length 31 [2023-12-22 18:06:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:36,784 INFO L495 AbstractCegarLoop]: Abstraction has 25397 states and 44113 transitions. [2023-12-22 18:06:36,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25397 states and 44113 transitions. [2023-12-22 18:06:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-22 18:06:36,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:36,786 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] [2023-12-22 18:06:36,792 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 (5)] Ended with exit code 0 [2023-12-22 18:06:36,990 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 [2023-12-22 18:06:36,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:36,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1995237496, now seen corresponding path program 1 times [2023-12-22 18:06:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634679299] [2023-12-22 18:06:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:36,992 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 [2023-12-22 18:06:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:36,993 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) [2023-12-22 18:06:37,029 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 [2023-12-22 18:06:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:37,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:06:37,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:37,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:37,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634679299] [2023-12-22 18:06:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634679299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:06:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735920917] [2023-12-22 18:06:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:06:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:06:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:37,322 INFO L87 Difference]: Start difference. First operand 25397 states and 44113 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:40,124 INFO L93 Difference]: Finished difference Result 63558 states and 111342 transitions. [2023-12-22 18:06:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:06:40,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-22 18:06:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:40,259 INFO L225 Difference]: With dead ends: 63558 [2023-12-22 18:06:40,259 INFO L226 Difference]: Without dead ends: 38162 [2023-12-22 18:06:40,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:40,310 INFO L413 NwaCegarLoop]: 7645 mSDtfsCounter, 4843 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 13254 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:40,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 13254 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-22 18:06:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38162 states. [2023-12-22 18:06:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38162 to 37992. [2023-12-22 18:06:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37992 states, 37890 states have (on average 1.7574557930852468) internal successors, (66590), 37989 states have internal predecessors, (66590), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37992 states to 37992 states and 66690 transitions. [2023-12-22 18:06:41,069 INFO L78 Accepts]: Start accepts. Automaton has 37992 states and 66690 transitions. Word has length 32 [2023-12-22 18:06:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:41,075 INFO L495 AbstractCegarLoop]: Abstraction has 37992 states and 66690 transitions. [2023-12-22 18:06:41,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 37992 states and 66690 transitions. [2023-12-22 18:06:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-22 18:06:41,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:41,080 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] [2023-12-22 18:06:41,089 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 [2023-12-22 18:06:41,286 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 [2023-12-22 18:06:41,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:41,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1723514362, now seen corresponding path program 1 times [2023-12-22 18:06:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:41,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011471264] [2023-12-22 18:06:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:41,288 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 [2023-12-22 18:06:41,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:41,290 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) [2023-12-22 18:06:41,323 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 [2023-12-22 18:06:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:41,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:06:41,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:41,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:41,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011471264] [2023-12-22 18:06:41,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011471264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:41,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:41,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:06:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666614825] [2023-12-22 18:06:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:06:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:06:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:41,665 INFO L87 Difference]: Start difference. First operand 37992 states and 66690 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:44,555 INFO L93 Difference]: Finished difference Result 109701 states and 192453 transitions. [2023-12-22 18:06:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:06:44,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-22 18:06:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:44,692 INFO L225 Difference]: With dead ends: 109701 [2023-12-22 18:06:44,692 INFO L226 Difference]: Without dead ends: 71710 [2023-12-22 18:06:44,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:44,756 INFO L413 NwaCegarLoop]: 8952 mSDtfsCounter, 5014 mSDsluCounter, 5672 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 14624 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:44,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5014 Valid, 14624 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 18:06:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71710 states. [2023-12-22 18:06:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71710 to 71457. [2023-12-22 18:06:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71457 states, 71355 states have (on average 1.7498002943031323) internal successors, (124857), 71454 states have internal predecessors, (124857), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71457 states to 71457 states and 124957 transitions. [2023-12-22 18:06:45,892 INFO L78 Accepts]: Start accepts. Automaton has 71457 states and 124957 transitions. Word has length 33 [2023-12-22 18:06:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 71457 states and 124957 transitions. [2023-12-22 18:06:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 71457 states and 124957 transitions. [2023-12-22 18:06:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-22 18:06:45,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:45,900 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] [2023-12-22 18:06:45,906 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 (7)] Ended with exit code 0 [2023-12-22 18:06:46,104 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 [2023-12-22 18:06:46,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:46,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash 610583760, now seen corresponding path program 1 times [2023-12-22 18:06:46,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:46,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596172033] [2023-12-22 18:06:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:46,106 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 [2023-12-22 18:06:46,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:46,107 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) [2023-12-22 18:06:46,109 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 [2023-12-22 18:06:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:46,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:06:46,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:46,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:46,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596172033] [2023-12-22 18:06:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596172033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:46,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:46,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:06:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39715509] [2023-12-22 18:06:46,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:46,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:06:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:46,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:06:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:46,497 INFO L87 Difference]: Start difference. First operand 71457 states and 124957 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:06:51,057 INFO L93 Difference]: Finished difference Result 200061 states and 350041 transitions. [2023-12-22 18:06:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:06:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-22 18:06:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:06:51,357 INFO L225 Difference]: With dead ends: 200061 [2023-12-22 18:06:51,357 INFO L226 Difference]: Without dead ends: 128605 [2023-12-22 18:06:51,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:06:51,427 INFO L413 NwaCegarLoop]: 9730 mSDtfsCounter, 4890 mSDsluCounter, 5638 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 15368 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-22 18:06:51,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4890 Valid, 15368 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-22 18:06:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128605 states. [2023-12-22 18:06:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128605 to 128245. [2023-12-22 18:06:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128245 states, 128143 states have (on average 1.7437940425930405) internal successors, (223455), 128242 states have internal predecessors, (223455), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128245 states to 128245 states and 223555 transitions. [2023-12-22 18:06:54,109 INFO L78 Accepts]: Start accepts. Automaton has 128245 states and 223555 transitions. Word has length 37 [2023-12-22 18:06:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:06:54,110 INFO L495 AbstractCegarLoop]: Abstraction has 128245 states and 223555 transitions. [2023-12-22 18:06:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:06:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 128245 states and 223555 transitions. [2023-12-22 18:06:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-22 18:06:54,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:06:54,114 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] [2023-12-22 18:06:54,119 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 [2023-12-22 18:06:54,316 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 [2023-12-22 18:06:54,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:06:54,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:06:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1010064380, now seen corresponding path program 1 times [2023-12-22 18:06:54,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:06:54,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485894088] [2023-12-22 18:06:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:06:54,318 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 [2023-12-22 18:06:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:06:54,321 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) [2023-12-22 18:06:54,322 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 [2023-12-22 18:06:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:06:54,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:06:54,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:06:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:06:55,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:06:55,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:06:55,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485894088] [2023-12-22 18:06:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485894088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:06:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:06:55,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:06:55,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678126908] [2023-12-22 18:06:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:06:55,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:06:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:06:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:06:55,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:06:55,164 INFO L87 Difference]: Start difference. First operand 128245 states and 223555 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:07:11,903 INFO L93 Difference]: Finished difference Result 296462 states and 515216 transitions. [2023-12-22 18:07:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:07:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-22 18:07:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:07:12,452 INFO L225 Difference]: With dead ends: 296462 [2023-12-22 18:07:12,452 INFO L226 Difference]: Without dead ends: 168218 [2023-12-22 18:07:12,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:07:12,730 INFO L413 NwaCegarLoop]: 7250 mSDtfsCounter, 4579 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 6654 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4579 SdHoareTripleChecker+Valid, 10909 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 6654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-22 18:07:12,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4579 Valid, 10909 Invalid, 7069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 6654 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-12-22 18:07:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168218 states. [2023-12-22 18:07:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168218 to 156527. [2023-12-22 18:07:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156527 states, 156425 states have (on average 1.7240914176122744) internal successors, (269691), 156524 states have internal predecessors, (269691), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156527 states to 156527 states and 269791 transitions. [2023-12-22 18:07:15,499 INFO L78 Accepts]: Start accepts. Automaton has 156527 states and 269791 transitions. Word has length 37 [2023-12-22 18:07:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:07:15,499 INFO L495 AbstractCegarLoop]: Abstraction has 156527 states and 269791 transitions. [2023-12-22 18:07:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 156527 states and 269791 transitions. [2023-12-22 18:07:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 18:07:15,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:07:15,504 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] [2023-12-22 18:07:15,531 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 (9)] Ended with exit code 0 [2023-12-22 18:07:15,708 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 [2023-12-22 18:07:15,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:07:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:07:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1681936853, now seen corresponding path program 1 times [2023-12-22 18:07:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:07:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675583706] [2023-12-22 18:07:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:07:15,712 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 [2023-12-22 18:07:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:07:15,713 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) [2023-12-22 18:07:15,714 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 [2023-12-22 18:07:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:07:15,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:07:15,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:07:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:07:16,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:07:16,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:07:16,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675583706] [2023-12-22 18:07:16,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675583706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:07:16,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:07:16,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:07:16,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42786452] [2023-12-22 18:07:16,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:07:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:07:16,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:07:16,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:07:16,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:07:16,279 INFO L87 Difference]: Start difference. First operand 156527 states and 269791 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:07:38,873 INFO L93 Difference]: Finished difference Result 409578 states and 701914 transitions. [2023-12-22 18:07:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:07:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-22 18:07:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:07:39,734 INFO L225 Difference]: With dead ends: 409578 [2023-12-22 18:07:39,734 INFO L226 Difference]: Without dead ends: 253052 [2023-12-22 18:07:39,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:07:39,844 INFO L413 NwaCegarLoop]: 7302 mSDtfsCounter, 2926 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 12444 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 11907 SdHoareTripleChecker+Invalid, 12779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 12444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-12-22 18:07:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2926 Valid, 11907 Invalid, 12779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 12444 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2023-12-22 18:07:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253052 states. [2023-12-22 18:07:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253052 to 223787. [2023-12-22 18:07:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223787 states, 223685 states have (on average 1.6980620068399759) internal successors, (379831), 223784 states have internal predecessors, (379831), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223787 states to 223787 states and 379931 transitions. [2023-12-22 18:07:44,123 INFO L78 Accepts]: Start accepts. Automaton has 223787 states and 379931 transitions. Word has length 39 [2023-12-22 18:07:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:07:44,123 INFO L495 AbstractCegarLoop]: Abstraction has 223787 states and 379931 transitions. [2023-12-22 18:07:44,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 223787 states and 379931 transitions. [2023-12-22 18:07:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 18:07:44,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:07:44,128 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] [2023-12-22 18:07:44,145 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 (10)] Ended with exit code 0 [2023-12-22 18:07:44,332 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 [2023-12-22 18:07:44,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:07:44,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:07:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1660645323, now seen corresponding path program 1 times [2023-12-22 18:07:44,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:07:44,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673871799] [2023-12-22 18:07:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:07:44,333 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 [2023-12-22 18:07:44,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:07:44,335 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) [2023-12-22 18:07:44,337 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 [2023-12-22 18:07:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:07:44,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:07:44,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:07:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:07:44,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:07:44,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:07:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673871799] [2023-12-22 18:07:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673871799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:07:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:07:44,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:07:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066671333] [2023-12-22 18:07:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:07:44,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:07:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:07:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:07:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:07:44,987 INFO L87 Difference]: Start difference. First operand 223787 states and 379931 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:07:49,591 INFO L93 Difference]: Finished difference Result 671062 states and 1139326 transitions. [2023-12-22 18:07:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:07:49,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-22 18:07:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:07:50,878 INFO L225 Difference]: With dead ends: 671062 [2023-12-22 18:07:50,878 INFO L226 Difference]: Without dead ends: 447276 [2023-12-22 18:07:51,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:07:51,073 INFO L413 NwaCegarLoop]: 6233 mSDtfsCounter, 6193 mSDsluCounter, 6217 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6193 SdHoareTripleChecker+Valid, 12450 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 18:07:51,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6193 Valid, 12450 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 18:07:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447276 states. [2023-12-22 18:07:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447276 to 447173. [2023-12-22 18:07:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447173 states, 447071 states have (on average 1.6977683634143124) internal successors, (759023), 447170 states have internal predecessors, (759023), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447173 states to 447173 states and 759123 transitions. [2023-12-22 18:07:59,711 INFO L78 Accepts]: Start accepts. Automaton has 447173 states and 759123 transitions. Word has length 39 [2023-12-22 18:07:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:07:59,711 INFO L495 AbstractCegarLoop]: Abstraction has 447173 states and 759123 transitions. [2023-12-22 18:07:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:07:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 447173 states and 759123 transitions. [2023-12-22 18:07:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-22 18:07:59,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:07:59,716 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] [2023-12-22 18:07:59,721 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 [2023-12-22 18:07:59,921 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 [2023-12-22 18:07:59,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:07:59,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:07:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 58955932, now seen corresponding path program 1 times [2023-12-22 18:07:59,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:07:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595077840] [2023-12-22 18:07:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:07:59,923 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 [2023-12-22 18:07:59,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:07:59,929 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) [2023-12-22 18:07:59,930 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 [2023-12-22 18:08:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:08:00,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:08:00,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:08:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:08:00,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:08:00,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:08:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595077840] [2023-12-22 18:08:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595077840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:08:00,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:08:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:08:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282430507] [2023-12-22 18:08:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:08:00,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:08:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:08:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:08:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:08:00,241 INFO L87 Difference]: Start difference. First operand 447173 states and 759123 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:08:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:08:09,367 INFO L93 Difference]: Finished difference Result 1341068 states and 2276694 transitions. [2023-12-22 18:08:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:08:09,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-22 18:08:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:08:12,532 INFO L225 Difference]: With dead ends: 1341068 [2023-12-22 18:08:12,532 INFO L226 Difference]: Without dead ends: 893896 [2023-12-22 18:08:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:08:12,868 INFO L413 NwaCegarLoop]: 6278 mSDtfsCounter, 6188 mSDsluCounter, 6215 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6188 SdHoareTripleChecker+Valid, 12493 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 18:08:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6188 Valid, 12493 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 18:08:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893896 states. [2023-12-22 18:08:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893896 to 893793. [2023-12-22 18:08:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893793 states, 893691 states have (on average 1.6973596019205743) internal successors, (1516915), 893790 states have internal predecessors, (1516915), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:08:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893793 states to 893793 states and 1517015 transitions. [2023-12-22 18:08:31,859 INFO L78 Accepts]: Start accepts. Automaton has 893793 states and 1517015 transitions. Word has length 40 [2023-12-22 18:08:31,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:08:31,860 INFO L495 AbstractCegarLoop]: Abstraction has 893793 states and 1517015 transitions. [2023-12-22 18:08:31,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:08:31,861 INFO L276 IsEmpty]: Start isEmpty. Operand 893793 states and 1517015 transitions. [2023-12-22 18:08:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-22 18:08:31,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:08:31,884 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] [2023-12-22 18:08:31,912 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 (12)] Ended with exit code 0 [2023-12-22 18:08:32,088 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 [2023-12-22 18:08:32,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:08:32,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:08:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1826994074, now seen corresponding path program 1 times [2023-12-22 18:08:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:08:32,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940610285] [2023-12-22 18:08:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:08:32,089 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 [2023-12-22 18:08:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:08:32,090 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) [2023-12-22 18:08:32,092 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 [2023-12-22 18:08:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:08:32,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:08:32,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:08:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:08:32,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:08:32,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:08:32,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940610285] [2023-12-22 18:08:32,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940610285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:08:32,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:08:32,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:08:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976501755] [2023-12-22 18:08:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:08:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:08:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:08:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:08:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:08:32,422 INFO L87 Difference]: Start difference. First operand 893793 states and 1517015 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)